Dada was a high Persian official serving in the court of King Shapur II, and secretly a Christian. When he was appointed governor of a province some way from the court, Dada began to worship and proclaim Christ openly. This came to the attention of the King, who sent one of his sons, Gubarlahas, to try and execute him. Dada was condemned and condemned to be thrown into a fiery furnace. But when Dada made the sign of the Cross, the fire went out, amazing the Prince and eventually leading him to convert to Christ.

The outraged King had his son thrown in prison and put to torture. Gubarlahas endured days of hideous torture without complaint and, though he had been subjected to horrible mutilations, emerged from his cell unscathed. This wonder led others, including two more of the King's own children or kin, to embrace Christ. Kazoy, the King's daughter, was allowed to enter into rest as soon as her tortures began. Gubarlahas was miraculously baptised in the midst of further tortures: A voice from on high pronounced the words of baptism, and a shower of water and oil fell on the Martyr. Not long afterward, he perished, along with Dada and Kasdios, one of Gubarlahas' kinsmen who had been convinced of the Truth by the miracles he had seen.