Saint Peter was a prison guard who suffered in Phoenicia in the year 295 with the holy martyr Ananias the Presbyter and seven soldiers. During a persecution of Christians under the emperor Diocletian (284-305), St Ananias was brought before Maximus the governor of Phoenicia. He had been arrested for confessing Christ and for his refusal to worship idols.
Peter and seven other soldiers who came to believe in Christ were stationed to guard Ananias and witnessed his suffering. They were drowned in the sea after lengthy torture.