Elemental Resistance & Partial Resistance, how do they work?
They reduce magic damage by the % given, like the cleric’s invincible skill from 2nd job. There are some bugs with ER, or was it intentional~ Level 1 ER lets a priest take 0 damage from many variety of magic attacks in the game, f/p mages have the same property on fire/poison attacks, while I/L resistance have this on I/L spells. However this bug is no gurrantee, and you want to max this skill (for priests) at jakum anyway. For example, if you kill the monster as you take the damage hit, you will receive the normal damage – the reduction from your resistance skill.
