Bishop Petros with Saint Peter the Apostle (Polish: Biskup Petros ze świętym Piotrem Apostołem) is a Nubian Christian wall painting from the last quarter of the 10th century. Made with tempera on silt plaster using a al secco fresco technique, it depicts Petros, the bishop of Faras between 974 and 997. The anonymous work was discovered in the ruins of Faras Cathedral, an important religious centre of Nubia, in modern Sudan. Rescued from flooding when Lake Nasser was created, since 1964 it is part of the Faras Gallery of the National Museum in Warsaw.