The Preaching of the Apostle Peter in Rome
1 The evil power, who hates all that is good and plots against the salvation of men, constituted Simon at that time the father and author of such wickedness, as if to make him a mighty antagonist of the great, inspired apostles of our Saviour.
2. For that divine and celestial grace which co-operates with its ministers, by their appearance and presence, quickly extinguished the kindled flame of evil, and humbled and cast down through them “every high thing that exalted itself against the knowledge of God.”
3. Wherefore neither the conspiracy of Simon nor that of any of the others who arose at that period could accomplish anything in those apostolic times. For everything was conquered and subdued by the splendors of the truth and by the divine word itself which had but lately begun to shine from heaven upon men, and which was then flourishing upon earth, and dwelling in the apostles themselves.
4. Immediately the above-mentioned impostor was smitten in the eyes of his mind by a divine and miraculous flash, and after the evil deeds done by him had been first detected by the apostle Peter in Judea, he fled and made a great journey across the sea from the East to the West, thinking that only thus could he live according to his mind.
5. And coming to the city of Rome, by the mighty co-operation of that power which was lying in wait there, he was in a short time so successful in his undertaking that those who dwelt there honored him as a god by the erection of a statue.
6. But this did not last long. For immediately, during the reign of Claudius, the all-good and gracious Providence, which watches over all things, led Peter, that strongest and greatest of the apostles, and the one who on account of his virtue was the speaker for all the others, to Rome against this great corrupter of life. He like a noble commander of God, clad in divine armor, carried the costly merchandise of the light of the understanding from the East to those who dwelt in the West, proclaiming the light itself, and the word which brings salvation to souls, and preaching the kingdom of heaven.
Source: Church History (New Advent)