[archaeolept]

blindness is just an MR check; fire resist does not help
Magma (fire w/ earth) is straight-forward physical damage
Astral fires (fire w/ astral) is armor negating but magic resist protects
Hellfire (w/ blood) is armor-piercing physical damage
Rage/hydrophobia have no fire resist but an MR check and are pretty sucky IMO
Bonds/prison of fire won't damage anything w/ fire resist, but will hold them back until they break them, I believe.