Funny you mention this, about 1-2 weeks ago ago i had vure 5 cast on me and it totally resisted and did not cure me 1 but, before you ask, i was not charmed had no debuffs/buffs on etc. i was standing outside a maw and unweakened 2 mins prior to the cure, just mase me laugh and others too.

chat log said:
Sophera starts casting Cure V
Resist! Lightvision resists Cure V

or something like that but thats all that it showed and HP stayed the same (Shophera WHM/BLM and Lightvision NIN/WAR), i have seen that msg, aparently if you resist something at the exact moment of casting cure or somehting it can show that resist msg