Never seen a barstatus spell give a Resist! message, unless player had the relevant trait/gear for it. I think those traits give a small % chance for an absolute Resist! as well as the more mundane magic resistance vs. a particular status effect also given by barstatus spells.
Which reminds me...
I think it would be a good idea to show special immunities in the chat log. If a monster is immune to a particular status effect or element, it should use the 'Resist!' or 'xxx has no effect' messages instead of the default resistance message. Even if absolute immunities are limited in the future.
Some kind of resistance gauge, like with fishing, would also be helpfull, although only if the target is particularly resistant to it.