User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-119.93.94.59-20130405083736/@comment-63.155.185.88-20130405084543

fire resistance of 10 or higher has one fireball icon next to it, denoting your resistance to small fireblight. I think if you get fire resistance of 20 you get the two fireballs and are completely resistant to fireblight.