Resistant Hide makes you immune to all acid attacks. However, if you end your turn on an acid square at the beginning of the next turn Resistant Hide will be destroyed and you will take damage. I know that I am being a bit anal about this one, and it probably won't be something that is fixed, but if Resistant Hide makes you immune to acid, should it really be destroyed by an acid square?
Resistant Hide automatically prevents all damage from acid. The armor destruction effect is not acid damage, however, it is a separate, non-elemental actor and resolves before damage is applied. That's like saying an armor that makes you immune to Bash cards should also make you immune to all slide back effects.
I understand that technically the damage negation does not prevent the armor destruction effect, hence why I said it is probably something that won't be fixed. But from an immersion/logical point of view an armor that is immune to acid damage should not be destroyed by acid. A better analogy would be like saying a card that makes you immune to all bash damage also makes you immune to all bash slide back effects.
