If a Protestant would read the writings of the early Church fathers he would discover that they were all Catholics.“You must follow the bishop as Jesus Christ follows the Father, and the presbytery as you would the Apostles. Reverence the deacons as you would the command of God. Let no one do anything of concern to the Church without the bishop. Let that be considered a valid Eucharist which is celebrated by the bishop, or by one whom he appoints. Wherever the bishop appears, let the people be there, just as wherever Jesus Christ is, there is the Catholic Church.”
—St. Ignatius of Antioch
Letter to the Smyrnaeans, 8:1-2, AD 107
And here are some quotes from St. Cyprian, an Eastern early Church father and martyr, about the role of St. Peter:
"Peter also, to whom the Lord commends His sheep to be fed and guarded, on whom He placed and founded the Church..." - St. Cyprian, Treatise II
"Peter also, upon whom by the Lord's condescension the Church was founded..." -St. Cyprian, Treatise IX
"...Since Rome from her greatness plainly ought to take precedence of Carthage..." - St. Cyprian, Epistle 48
"Nevertheless, Peter, upon whom by the same Lord the Church had been built, speaking one for all, and answering with the voice of the Church, says..." - St. Cyprian, Epistle 54
"After such things as these, moreover, they still dare— a false bishop having been appointed for them by, heretics— to set sail and to bear letters from schismatic and profane persons to the throne of Peter, and to the chief church whence priestly unity takes its source; and not to consider that these were the Romans whose faith was praised in the preaching of the apostle, to whom faithlessness could have no access." - St. Cyprian, Epistle 54
"...Peter speaks there, on whom the Church was to be built, teaching and showing in the name of the Church..." - St. Cyprian, Epistle 68
"...and the Church founded by Christ the Lord upon Peter, by a source and principle of unity, is one also." - St. Cyprian, Epistle 69
"...For neither did Peter, whom first the Lord chose, and upon whom He built His Church..." - St. Cyprian, Epistle 70
"For first of all the Lord gave that power to Peter, upon whom He built the Church, and whence He appointed and showed the source of unity— the power, namely, that whatsoever he loosed on earth should be loosed in heaven." - St. Cyprian, Epistle 72
"...Moreover, Peter himself, showing and vindicating the unity..." - St. Cyprian, Epistle 73
Source link for St. Ignatius of Antioch quote:
The Early Church Fathers I Never Saw” by Marcus Grodi