Get out your Basil leaves! For they are considered the best cure for a basilisk bite. That is, If you haven't looked him in the eyes yet. Those eyes hold a great power- instant DEATH! Some say you will drop dead to the ground. Others say you will turn to stone.
I found this awesome basilisk illustration by Richard Svensson.
Consider yourself warned and keep a lookout! If you do see him, advert your eyes and now you know what to do. Grab a basil leaf... I wonder if a Basil Leaf Necklace works just as well!