Johnny is 100% correct. Even with weapon skill 0 you can hit back; only on it's on a 6.
If you have anything that would reduce your ability to hit (like the zombie dragon aura) you still hit on 6s.
So, to recap.
You fail a fear test. Weapon skill 1.
You fail the battle of wills test. Weapon skill 0. Automatically hit, hit on 6s.
You are in combat with a zombie dragon. His aura gives you -1 to hit; you still hit on 6s.