Life and Martyrdom
Nicomedia, the eastern imperial capital under Diocletian, was a principal center of the persecution that began in 303, and the synaxarion sets the story of Trophimus and Eucarpus against this background. The two are remembered first as soldiers charged with enforcing the decrees against Christians, a duty the sources say they performed with marked ferocity.
The turning point, as the tradition relates it, came while they were hunting down believers. A great fiery cloud came down from the sky, and from it a voice asked why they were so zealous in threatening the servants of God, telling them that no human strength could suppress those who believe and that it was better to join them. The accounts add that the image of a radiant man appeared amid a great multitude. Overcome with fear, the soldiers fell to the ground and were converted.
Spiritually reborn, they opened the prisons and set free the Christians who had been confined there. This act brought their own arrest. The synaxarion describes their suspension and the tearing of their bodies with iron hooks, after which they went willingly into the fire and there surrendered their souls to God.