In anger, the emperor sent Eusebius into exile in Palestine, where he was severely mistreated by the Arians. He was moved around from place to place and after his release by the Emperor Julian he consulted with Athanasius in Alexandria on the Arian crisis. Returning to Italy, he joined with St. Hilary of Poitiers in opposing the Arian bishop of Milan and returned to Vercelli amid the rejoicing of his people.
Eusebius is considered by many to be the author of the Athanasian Creed, and a copy of the Gospels written in his own hand is preserved in the cathedral at Vercelli. He died on August 1, 371, his courage in suffering for the faith inspiring other bishops to oppose the Arian heresy.
Lead us, O Lord God, to imitate the constancy of Saint Eusebius in affirming the divinity of thy Son: that, by preserving the faith he taught as thy Bishop, we may merit a share in the very life of the same Jesus Christ thy Son our Lord; who liveth and reigneth with thee, in the unity of the Holy Spirit, ever one God, world without end. Amen.