Revenge

 The riders' spears scratched Zaos here and there, but he managed to avoid being hit on his vitals. By dodging their attacks by a hair's breadth, Zaos had the chance not only to cut down the rider's legs with a single swing but also drop their horses. His sword seemed sharper than usual, even though he only had time to clean it. Several riders noticed that Zaos was in trouble, and then they dashed toward him with their spears in hands, which was what he had been waiting for. Zaos held his sword firmly and then swung, spreading massive waves of flames in an arc, burning the same riders and their horses.

 Before Zaos could see the results of his actions, he retreated. He had plenty of time to do so since the other enemies were caught off guard. Even those who weren't damaged by the flames were surprised by his attack.