The paladins cover thier faces as the scorching fireball hits them and the missles attack them. Before they could even go to the back to get thier horses.

One falls dead one is about to fall but another catches him and with his hand radiating from positive energy saves him from the brink of death.

The smoke from that blast will take a few rounds to dissipate, and they need to get thier horses anyway, this gives you a few minutes to escape.