Gauths/Beholders cast:
Cause Serious Wounds. Solution--Spell Immunity: Necromancy.
Lightning Bolt. Solution--Spell Immunity: Evocation or the Cloak of Reflection.
Dire Charm or Charm Person. Solution--SI: Enchantment or just decent Saves.
Death Spell. Solution--Forget about using summons. (Apparently, if you haven't BaldurDashed your game, Beholders aren't smart enough to react to your summons)
Slow. Solution--SI: Alteration or good Saves.
Note: No matter what Spell Immunities you're using, a single Beholder can Dispel them all
instantly with their accursed
Anti-Magic Ray. Happily,
Spell Shield will protect you from Anti-Magic Rays for the full duration of the spell. (This seems to be the only worthwhile use for Spell Shield.)
All of the above Beholderkin attacks (except Death Spell and the Anti-Magic Ray) can be ignored by using the ToB Cloak of Cheese or 100% Magic Resistance, or downright reflected, with the SoA Cloak of Cheese or the Shield of Cheese.
SI: Evocation is also very handy for shielding yourself from your own spells: Even though Beholderkin do pitiful melee damage, they love to get close to you. In this situation, there's nothing more fun than to cast things like Death Fog, Ice Storm, and Incendiary Cloud on yourself!
