resists sword cause he knows he can counter it

No physical projectile came from the sword.
It could not be evaded if you were quick enough or blocked by hiding behind cover.
No matter where you ran or what you did to defend, the fear welling up within your own
body would automatically kill you. So you could not run. You could not defend. Nothing
you did held any meaning. You were dead before you could do anything. You were dead
the second you stood on the same battlefield.
All actions were robbed of all meaning.
All fighting lost its reason to exist.
As he was being directly targeted, Kamijou Touma’s heart should surely have stopped.
Before Dáinsleif could actually do anything and before the sword could enter the battle
directly. No reason was needed. That sword gave its target an instinctual fear that robbed
them of all life. It should have completely killed that normal boy without leaving a scratch
on him.
And yet…
He did not fall.
Kamijou Touma did not fall.
Even as he stood before Dáinsleif, the sword that would bring ruin to the world.
He pushed aside his fear and his heart continued to function normally.
Marian Slingeneyer frowned slightly.
In response, Kamijou Touma held up his right fist.
He would use it to deal with Marian as she held out that sheathed magic sword.
“That attack is triggered by the fear of that powerful magic, so it will not work on me. I
know that magic is not something that will hit me no matter what. With the power of my
right hand…no, as long as I have the will to clench my fist, I can brush aside or negate it.”
He could destroy magic.
He could break illusions.
Because he knew that, the fear was mitigated some. He was not merely on the receiving
end. He knew he had a 50/50 chance of resisting, so he did not have to choose the option
of giving up before fighting. That was why Kamijou Touma was able to fight. He could still
stand up to that ultimate magic sword that would bring about the final battle of Norse
mythology, Ragnarök.

- New Testament Volume 4 Chapter N Part 1