Reducing dex is important. Enough -dex stops them using triple-refresh pills to bring their moves back up, and you can't use lashes without enough moves.
There's other things too including:
- cursed weapons,
- evade (i.e. keep yourself unencumbered if you are high dex -- and keep your dex up!)
- dam redux (including elemental /negative resist if appropriate)
- bard distortion
- keeping the ap aimed at another target (e.g. your inner) whilst you do the rest -- requires being able to blind though somehow which may not be an option
- lagging the ap (bash-spec can do this well, especially with a healer-type who is not engaged in the combat).
As Victoria, hamstring was quite a good opener to use on me.