God bless !
The church fathers believed that all Apostels received the keys/the same blessing:
St. Hieron. Epist. 146 ad Ev.
"We must not believe that the city of Rome is a different church from that of the whole world. Gaul, Britain, Africa, Persia, the East, India, all the barbarous nations, adore Jesus Christ, and observe one and the same rule of truth. If one is looking for authority, the world is greater than one city. Wherever there is a Bishop, be he at Rome or at Eugubium, at Constantinople or at Rhegium, at Alexandria or at Tanis, he has the same authority, the same merit, because he has the same priesthood. The power that riches give, and the low estate to which poverty reduces, render a Bishop neither greater nor less."
It cannot be more distinctly stated that the rule of truth dwells only in the entire episcopal body, and not at Rome; that the Bishop of Rome is no more, as bishop, than the humblest bishop of the Church;
St. John Chrysostom:
"Behold," he says, "how Peter does all things by common consent, and decides nothing by his own authority and power. . . ." Upon the Acts of the Apostles, 8d hom.
If you believe," he says, Origen, Commentary on St. Matt. "that God has raised the whole building of his Church on Peter alone, what will you say of John, the son of the Thunder? What will you say of each of the Apostles? Will you venture to say that the gates of hell shall not prevail against Peter in particular, but shall prevail against the others? Are not the words, the gates of hell shall not prevail against it, addressed to them all? Have not these words had their fulfillment in each one of the Apostles?"
St. Ambrose, On the Incarnation. "Faith is the foundation of the Church, for it was not of the person but of the faith of St. Peter that it was said that the gates of hell should not prevail against it; it is the confession of faith that has vanquished hell." The truth confessed by St. Peter is, therefore, the foundation of the Church, and no promise was made to his person, nor, consequently, to his subjective faith.
In explaining these words in the epistle to the Galatians, "I went up to Jerusalem to see Peter," he says: "It was proper that Paul should go to see Peter. Why? was Peter superiour to him and to the other Apostles? No; but because, of all the Apostles, he was the first to be intrusted by the Lord with the care of the churches. Had he need to be taught, or to receive a commission from Peter? No; but that Peter might know that Paul had received "the power which had also been given to himself."
St. Augustine Retractions, Book I. ch. 21. "In that book, I said in one place, in speaking of St. Peter, that the Church had been built on him as on the rock. This thought is sung by many in the verses of the blessed Ambrose, who says of the cock, that "when it crew the Rock of the Church deplored his fault.' But I know that subsequently I very frequently adopted this sense, that when the Lord said, 'Thou art Peter, and upon this rock I will build my Church,' he meant by this rock, the one which Peter had confessed in saying, 'Thou art the Christ, the Son, of the living God;' so that Peter, called by the name of this rock, represented the person of the Church which is built upon that rock, and which has received the keys of the kingdom of heaven. In fact, it was not said to him, Thou art the rock; but thou art Peter. The rock was Christ. Peter having confessed him as all the Church confesses him, he was called Peter.
A few of hundrets or thousends similar !
No one thought of Peter or the Pope that they only have the keys or are infallable...but if you like I can post more also from Councils and Synods.
And also from St. Greogory the great (he is often used as witness for the Primacy but in reality he was against such teaching)