Is Colossus immune to Annihilus’ stifle?


Based on Annihilus’ profile, stifle debuff is only able to be applied while armor break is applied. That means champs immune to armor break should be immune to stifle? Do I miss something? The following is Colossus versus 6.3.1 mesmerize Annihilus. Just intended to record an evidence. Don’t bother that low health points. Thanks.

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Comments
Colossus is being immune to the armor break, but he isn't avoiding Annihilus from triggering them. Therefore stifle gets applied whenever he would cause one armor break.