RBW are very difficult to stand in front of...when I play mages, I do not do it without ABS/stoneskin and protection if they are good/evil.
But, if you do not want to fight them, don't.
- You will never be summoned to one.
- You can always see them coming
- They will not gang you*
You on the other hand can:
- Gang them down
- Take the head with others
- Have a healer sanc and heal you
- Heal at any healer
- Prep with protection/stoneskin/aura/shield/haste/enlarge/giant str/wraithform/barrier/protection from elements, holy, unholy/fly and even wait for them in treeform (all depending on game knowledge)
- Quaff a return potion
*I've heard stories, but, even as a drillmaster, I have not seen it happen.