78 All men are to have part in this true unity; and so, when a Catholic priest offers the Eucharistic Sacrifice, he presents our merciful God with a spotless Victim and prays to Him especially "for Thy holy Catholic Church, that it may please Thee to grant her peace, to protect, unite, and govern her throughout the world, together with Thy servant our Pope, and all who truly believe and profess the Catholic and Apostolic faith."(33)
Source: Ad Petri Cathedram (Vatican.va)