In Orthodox Christianity, we have a lot of prayers which we use everyday. Here are a few examples of how our prayers end.
Beginning of the Trisagion prayers: "In the Name of the Father, and of the Son, and of the Holy Spirit. Amen."
Ending: "...Lord Jesus Christ our God, have mercy on us and save us. Amen."
Ending of the Troparia to the Holy Trinity: "Do thou now enlighten the eyes of my understanding, open my mouth to receive thy words, teach me thy commandments, help me to do thy will, confessing thee from my heart, singing and praising thine All-holy Name: of the Father, and of the Son, and of the Holy Spirit: now and ever, and unto ages of ages. Amen."
An ending to another morning prayer (The Prayer of St. Basil): "...open our mouths and fill them with thy praise, that we may unceasingly sing and confess thee, who art God glorified in all and by all, the eternal Father, the Only-Begotten Son, and the all-holy and good and life-giving Spirit: now and ever, and unto ages of ages. Amen."