User blog comment:Thesupremejoyner98/Grimm that can cut through aura/@comment-3146930-20150113222323/@comment-25555436-20150115160819

Well Jaune received quite a good amount of direct hits from not just any Ursa, but a Major Ursa, even bigger and stronger. And, he got out with only some bruises and I think a small barely visible cut on his cheek.

So, I suppose Aura only prevents attacks from being Fatal or Lethal. I suppose.