How is stun (resist) work in general?

[TirionCrey]

Some mobs, like Anantaboga, are immune to stun.

For other mobs, shield bash (initial hit) will stun the mob for 6 seconds to allow you to wail on it unfettered.

Just like other stun skills, the enemy begins to build up stun resistances over time.

Take Ifrit, for example.

It is reasonable to see 6-8 eruptions before Hellfire, and if lucky none of them get resisted. It is however possible for #6, 7 and 8 to be resisted, as you have used it so many times before.

One point to this- Only the PLD should ever be stunning, if anyone else lands a stun in the fight, it WILL contribute to building the enemy's resistances.

Hellfire does reset his resistances, though, so you can have a fresh go atit afterwards.

The explanation before was the right one. After the very first Stun, the mob will reset it's resistance after 60seconds have passed. A mob will never be resistant forever, unless he was immune from the get go. After 60 seconds have passed, you can Stun again for 6 seconds and then another 2 times in the coming 60 seconds, before it's gonna be a full 6 second stun again. As long as the enemy is not stunned more than 3 times in that amount of time, he CAN'T resist a single Stun.