Complex sentence: Perhaps seeing signs of fatigue from the Muslim soldiers, Andarzaghar judged that this was the right moment for his counter-attack, At this command the Sassanians surged forward and struck at the Muslims.
Split into simpler sentences: Perhaps seeing signs of fatigue from the Muslim soldiers, Andarzaghar judged that this was the right moment for his counter-attack. At his command the Sassanians surged forward and struck at the Muslims.