This is a tough question to answer because there could be a variety of outcomes. Additionally, no Realtor will want to be 'on the hook' for legal advice if the outcome doesn't go exactly as predicted here. I'm not trying to give you the wimpy 'ask and attorney' answer...but there are many variables.
How big is the claim? Will they settle? Who is going to pay to fight the claim? What is your broker telling you to do? Who have you gotten advice from so far?
If you do need or want a good real estate attorney recommendation, I can get one for you. But they are going to want some specfics as well.
thanks and good luck.