Dhu Nuwas
Dhu Nuwas' reign, and his persecution of Christians, was brought to an end after he was defeated by an Ethiopian army. Some sources state that the emperor of Byzantium, Justin I requested his ally, the Abyssinian king Ella-Asbeha of Aksum, to invade Najran, kill Dhu-Nuwas, and annex Himyar. According to the "Book of Himyarites", Najrani Christian refugees (including one by name of Umyya) arrived in Abyssinia and requested aid from its king. In either case, the Abyssinians sent an army of 7,000 men led by Abraha al-Ashram, the Christian viceroy of the Negus of Abyssinia, and defeated Dhu Nuwas's forces and restored Christian rule in Najran.