On setting out he wrote a letter of consolation and exhortation to the faithful of Carthage which is still extant in the works of St. Gregory of Tours (P.L., LVII, 769–71).

[1] Gunthamund, who succeeded Huneric as Vandal king, allowed Eugenius to return to Carthage and permitted him to reopen the churches.

After eight years of peace Thrasamund succeeded to the throne, arrested Eugenius and condemned him to death, but commuted the sentence into exile at Vienne, near Albi (Languedoc), where the Arian Alaric was king.

The Bishop protested his ability to heal but eventually acquiesced with the words "I have already told you I am a sinful man; but may he who has deigned to visit you act in accordance with your faith and open you eyes".

He wrote also an Apologeticus pro Fide; Altercatio cum Arianis, fragments of which are quoted by Victor de Vita; also pleas for the Catholics, addressed to Huneric or his successors.