 Complete the following phrase:  Priscus or Priskos ; died 613 was a leading East Roman Byzantine general during the reigns of the Byzantine emperors Maurice reigned 582602, Phocas r. 602610 and Heraclius r. 610641. Priscus comes across as an effective and capable military leader, although the contemporary sources are markedly biased in his favour. Under Maurice, he distinguished himself in the 