So you need to identify what is making you such a target. Perhaps because you're the spookie rookie? Or is it more? You have identified you feel bad but why? Figuring this out is how you fix not becoming the target in the future.
You can try manipulation. Whenever you are alone with them you talk them up, 'oh man you're too talented to be here' type of talk. It could help. Beware getting caught.
Learn from dogs. How did you respond to this person? If you respond non-emotionally or neutraly to their bad behaviour. Imagine you were dogs. You have 1 dog coming and nipping at you. What do you do? You show your teeth first, if it doesnt stop, you growl, if it doesn't stop you either leave or you bite.
Also be sure you're responding correctly. If someone isnt being an asshole and everyone around doesnt think their behaviour is wrong. When you bite back, you become the asshole. So you have to be sure you're on the right side.