Here is what the Orthodox church believes about salvation, etc. It's very similar to what other 'traditional' Christian churches believe.
"SALVATION is the divine gift through which men and women are delivered from sin and death, united to Christ, and brought into His eternal kingdom. Those who heard St. Peter's sermon on the day of Pentecost asked what they must do to be saved. He answered, "Repent, and let every one of you be baptized in the name of Jesus Christ for the remission of sins; and you shall receive the gift of the Holy Spirit" (Acts 2:38). Salvation begins with these three steps: 1) repent, 2) be baptized, and 3) receive the gift of the Holy Spirit. To repent means to change our mind about how we have been, to turn from our sin and to commit ourselves to Christ. To be baptized means to be born again by being joined into union with Christ. And to receive the gift of the Holy Spirit means to receive the Spirit Who empowers us to enter a new life in Christ, to be nurtured in the Church, and to be conformed to God's image.
Salvation demands faith in Jesus Christ. People cannot save themselves by their own good works. Salvation is "faith working through love". It is an ongoing, life-long process. Salvation is past tense in that, through the death and Resurrection of Christ, we have been saved. It is present tense, for we are "being saved" by our active participation through faith in our union with Christ by the power of the Holy Spirit. Salvation is also future, for we must yet be saved at His glorious Second Coming.
BAPTISM is the way in which a person is actually united to Christ. The experience of salvation is initiated in the waters of baptism. The Apostle Paul teaches in Romans 6: 1-6 that in baptism we experience Christ's death and resurrection. In it our sins are truly forgiven and we are energized by our union with Christ to live a holy life. The Orthodox Church practices baptism by full immersion.
Currently, some consider baptism to be only an "outward sign" of belief in Christ. This innovation has no historical or biblical precedent. Others reduce it to a mere perfunctory obedience to Christ's command (cf. Matthew 28:19, 20). Still others, ignoring the Bible completely, reject baptism as a vital factor in salvation. Orthodoxy maintains that these contemporary innovations rob sincere people of the most important assurances that baptism provides -- namely that they have been united to Christ and are part of His Church.
NEW BIRTH is receipt of new life. It is how we gain entrance into God's kingdom and His Church. Jesus said, "Unless one is born of water and the Spirit, he cannot enter the kingdom of God" (John 3:5). From its beginning, the Church has taught that the "water" is the baptismal water and the "Spirit" is the Holy Spirit. The new birth occurs in baptism where we die with Christ, are buried with Him, and are raised with Him in the newness of His resurrection, being joined into union with Him in His glorified humanity (Acts 2:38; Romans 6:3, 4). The idea that being "born again" is a religious experience disassociated from baptism is a recent one and has no biblical basis whatsoever.
JUSTIFICATION is a word used in the Scriptures to mean that in Christ we are forgiven and actually made righteous in our living. Justification is not a once-for-all, instantaneous pronouncement guaranteeing eternal salvation, regardless of how wickedly a person might live from that point on. Neither is it merely a legal declaration that an unrighteous person is righteous. Rather, justification is a living, dynamic, day-to-day reality for the one who follows Christ. The Christian actively pursues a righteous life in the grace and power of God granted to all who continue to believe in Him.
SANCTIFICATION is being set apart for God. It involves us in the process of being cleansed and made holy by Christ in the Holy Spirit. We are called to be saints and to grow into the likeness of God. Having been given the gift of the Holy Spirit, we actively participate in sanctification. We cooperate with God, we work together with Him, that we may know Him, becoming by grace what He is by nature.
[my note: the EO often call all this 'theosis' and make no distinction between sanctification and justification]
THE BIBLE is the divinely inspired Word of God (II Timothy 3:16), and is a crucial part of God's self-revelation to the human race. The Old Testament tells the history of that revelation from Creation through the Age of the Prophets. The New Testament records the birth and life of Jesus as well as the writings of His Apostles. It also includes some of the history of the early Church and especially sets forth the Church's apostolic doctrine. Though these writings were read in the Churches from the time they first appeared, the earliest listings of all the New Testament books exactly as we know them today, is found in the 33rd Canon of a local council held at Carthage in 318, and in a fragment of St. Athanasius of Alexandria's Festal Letter in 367. Both sources list all of the books of the New Testament without exception. A local council, probably held at Rome in 382, set forth a complete list of the canonical books of both the Old and New Testaments. The Scriptures are at the very heart of Orthodox worship and devotion.
WORSHIP is to render praise, glory, and thanksgiving to God: the Father, the Son, and the Holy Spirit. All humanity is called to worship God. Worship is more than being in the "great-out-of-doors", or listening to a sermon, or singing a hymn. God can be known in His creation, but that doesn't constitute worship. And as helpful as sermons may be, they can never offer a proper substitute for worship. Most prominent in Orthodox worship is the corporate praise, thanksgiving, and glory given to God by the Church. This worship is consummated in intimate communion with God at His Holy Table.
As is said in the Liturgy, "To Thee is due all glory, honor, and worship, to the Father, and to the Son, and to the Holy Spirit, now and ever and unto ages of ages. Amen." In that worship we touch and experience His eternal kingdom, the age to come, and we join in adoration with the heavenly hosts. We experience the glory of fulfillment of all things in Christ, as truly all in all.
EUCHARIST means "thanksgiving" and early became a synonym for Holy Communion. The Eucharist is the center of worship in the Orthodox Church. Because Jesus said of the bread and wine at the Last Supper, "This is my body", "This is my blood", and "Do this in remembrance of Me" (Luke 22: 19,20), His followers believe -- and do -- nothing less. In the Eucharist, we partake mystically of Christ's Body and Blood, which impart His life and strength to us. The celebration of the Eucharist was a regular part of the Church's life from its beginning. Early Christians began calling the Eucharist "the medicine of immortality" because they recognized the great grace of God that was received in it.
(by the way, the early Church Fathers had the same view about the Eucharist and Baptism as traditional Christians today. Just look at what St. Justin Martyr said as early as the 2nd century (we can assume that's what the Apostles believed as well):
CHAPTER LXVI -- OF THE EUCHARIST. And this food is called among us Eukaristia [the Eucharist], of which no one is allowed to partake but the man who believes that the things which we teach are true, and who has been washed with the washing that is for the remission of sins, and unto regeneration, and who is so living as Christ has enjoined. For not as common bread and common drink do we receive these; but in like manner as Jesus Christ our Saviour, having been made flesh by the Word of God, had both flesh and blood for our salvation, so likewise have we been taught that the food which is blessed by the prayer of His word, and from which our blood and flesh by transmutation are nourished, is the flesh and blood of that Jesus who was made flesh. For the apostles, in the memoirs composed by them, which are called Gospels, have thus delivered unto us what was enjoined upon them; that Jesus took bread, and when He had given thanks, said, "This do ye in remembrance of Me, this is My body;" and that, after the same manner, having taken the cup and given thanks, He said, "This is My blood;" and gave it to them alone. Which the wicked devils have imitated in the mysteries of Mithras, commanding the same thing to be done. For, that bread and a cup of water are placed with certain incantations in the mystic rites of one who is being initiated, you either know or can learn."