Let's say I have 80% resistance to one of the elemental attacks. Does that mean I will be able to resist 8 out of 10 attacks or does that mean on one attack, 80% of the damage is resisted? I have heard it both ways.
If 8 out of 10 attacks were resisted then you'd be fucked on the 2 out of 10 that weren't resisted. I concur with !K_A!, it's 80% of the damage resisted.