Nobody panicked at the approaching lightning bolt. The vampires had their magic users positioned at the gate to be prepared for a large scale artillery type spell. It was a common way to start a battle since if the enemy were unprepared, it would be akin to having them welcome you into their city. Before the bolt struck, it crashed against a translucent green dome. This was most likely some kind of shielding magic cast by the vampires.
When Kace thought about this, he wondered how something of that magnitude was pulled off exactly. It could be advantageous to him in the future if he could learn something like that. Sparks flew where the two spells met, lighting the area up in a white and green glow as the two forces fought for supremacy. Cracks began to appear in the green dome, making Kace fear that it would not be strong enough to hold back the initial assault.