St. Athanasius: Defender of Christ's Divinity, "Athanasius Against the World," Feast Day (May 2) and Prayer
St. Athanasius, feast May 2: the bishop of Alexandria exiled five times for defending Christ's divinity against Arianism, Doctor of the Church. His life and words.
St. Hilary of Poitiers: "Athanasius of the West," Doctor of the Church, Feast Day (January 13) and His Prayer
St. Hilary of Poitiers, feast January 13: the married convert who became bishop, was exiled for defending Christ's divinity and wrote On the Trinity. His prayer.
St. Cyril of Alexandria: Defender of Mary, Mother of God, the Council of Ephesus, Feast Day (June 27)
St. Cyril of Alexandria, feast June 27: the patriarch who defended Mary's title Mother of God (Theotokos) at the Council of Ephesus in 431. His life and words.
St. John of Ávila: Apostle of Andalusia, Patron of Priests in Spain, Doctor of the Church, Feast Day (May 10)
St. John of Ávila, feast May 10: the Spanish priest and preacher who guided St. Teresa and St. John of God, patron of Spanish priests and Doctor of the Church.