Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Erbil Citadel' has mentioned 'Christianity' in the following places:
Occurrence Sentence Text Source
During the Sassanian period and the Abbasid Caliphate, Erbil was an important centre for Christianity.
In 340 AD, Christians in Erbil were persecuted and in 358, the governor became a martyr after he converted to Christianity.