Complex sentence: He was hostile to his new superior, Eusebius, Bishop of Cyzicus, and when Eusebius was murdered, the Cappadocian found himself accused of complicity in the crime.
Split into simpler sentences: He was hostile to his new superior, Eusebius, Bishop of Cyzicus. When Eusebius was murdered, the Cappadocian found himself accused of complicity in the crime.