So Yami has two versions of dimension slash, once that visibly travels a distance, and one that simultaneously cuts through space. I'm arguing Asta does the latter.
Also anti-magic has resistance to spatial manipulation on his profile via resisting Zagred's trident warp. However, the reason I'm arguing for spatial manipulation isn't just based on the fact that it resisted Luci's spatial manipulation, but the fact that it was able to interact with the warped space, and
also cut through since you visibly see it being pulled back from Nacht's hand (
the dark wavy stuff) which relieved Nacht grim getting his hand crush, but did not nullify the warped space.
And the durability negation is coming from being able to cut said space, instead of targeting the thing that occupied it to bypass it.