Fear bomb can be rough but there are a number of solutions:

1. Don't let them get near you to cast an AoE fear - use all the CC you have available

2. Kill whomever can cast fear ASAP

3. Make sure you can spread your team apart easily - losing control of half is better than all

4. Always have a PvP trinket equipped if you are PvP flagged

5. If you know a second fearbomb is incoming (and you are feral) use Berserk to get out of it and stay immune for a while

6. Cast Starfire before you are feared - at least you'll be doing damage while running around

7. If all else fails, make your leader a rogue (this is what I've done). The rogue can shutdown most fear bombs before they happen.