Dustin stood his ground, though he wasn't completely confident if the clothes he was wearing would hold up against the heat from the fire.
The drake continued pouring out the fire until thirty seconds were up, before it stopped. As the fire ceased, the drake couldn't help but react in a slightly fearful and more agitated way. Before it's eyes and out of the fire, came a humongous snake that was bigger than the drake.
Dustin had never seen a dragon with his own eyes or really knew what it was really like, so he didn't want to take chances. If the creature he was battling with was of lower rank than A, then he might have considered it, but the drake was A rank, and there was a possibility of the skill not being very effective.