Holy Martyrs Dada and those with them (4th c.)

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.