Episcopate under Ottoman rule
Euthymios assumed the metropolitan see of Rhodes after the island fell to the Ottomans in 1523. The sources record that he shepherded his flock in a God-pleasing manner during those difficult years of occupation, ministering to a Christian population now living under foreign and non-Christian rule.
In 1529 he was arrested on the accusation that he was the instigator and leader of a conspiracy against the Turkish authorities. He was condemned and put to death by impalement, suffering together with other clergy and leading members of the Christian community of Rhodes.