Originally Posted by
saevel
The -elemental resist part is unresistable, like Dia / Bio effect. The monster can resist the damage component, and they will if your /NIN, but the -30 resistance will still take effect and last for long enough to get the job done. I believe it's something like 15 to 30 seconds, but I could be wrong there (leaning towards 15).
Basically you'd cast Huton: Ni then cast Paralyze I / II or Blizzard IV. Only element it won't work for is Dark based spells like Sleep / Drain / Aspir and the like.