"Deeming him to be a mere scholar is too much, that man was a monster in the truest sense." The memory, the pain he endured, and the horror of each part of your soul shattering in front of what Chalice can consider a lower being.
It was an absurd feeling, the fear he felt at that moment was unlike anything. For the angels of Bright Lineage, were born to battle their kind. The angels of those that can Rival the Sun God in destructive strength was not someone he can mess with. So defeated by her was not much of a stain on his name.
And such defeats are also understandable.