Peter didn't spend much time in Rome at all. It amazes me that Catholics just take the word of the Catholic Church rather than truly study scripture, history, and the travels of the apostles. Peter spent his time in Britain not in Rome. Peter was sent to the lost tribes of Israel not the Gentiles or the Jews.
Eternal God, Creator of all things, remember that Thou alone didst create the souls of infidels, framing them to Thy Own image and likeness; behold, O Lord! how, to Thy dishonor, Hell is daily replenished with them. Remember, O Lord! Thy Only Son, Jesus Christ, Who suffered for them, most bountifully shedding His Precious Blood: suffer not, O Lord Thy Son and our Lord to be any longer despised by infidels; but rather, being appeased by the entreaties and prayers of the elect, the Saints, and of the Church, the most blessed spouse of Thy Son, vouchsafe to be mindful of Thy mercy, and forgetting their idolatry and infidelity, cause them also to know Him Whom Thou didst send, Jesus Christ Thy Son, our Lord, Who is our health, life, and resurrection, through Whom we are freed and saved, to Whom be all glory forever. Amen.
~ ST. FRANCIS XAVIER