Forum:NecroGardna Vs divide wrath

My friend and I argue with each other about necrogardna and divide wrath He suppose to attack with 1 of his monster and I use necro gardna to negate it attack the He use divide wrath to negate necrogardna effect, I say cannot because necrogardna already outgame U have no more target for your cards to resolve, then he say if u wan to use necrogardna effect I can just negate it with tis before u outgame, So which 1 of us is right, anyone can help me