Shion can't nullify Dagruel's full power.

But that balance, would be broken in a single moment.
That's right, time started moving once more.

At that exact moment, Dagruel became certain of his victory.
His superpowers which were sealed are now released. What that implied, was that he is now able to unleash those superpowers which gave him the nickname "Earthquake".
Dagruel, releases a massive all range attack onto Shion.
They were equal in the Stopped World due to her abilities, but things are different now that the laws of physics are back in motion.
The number of rules to control exponentially increased, which created many more results from cause and effect.
Complete predictions, and phenomena control has become more difficult to accomplish. That was already a feat, when the opponent was on equal footing.
As per Veldora's warning, Shion's only chance at victory was while the Stopped World was in effect.
The ground quaked, with tremors that made standing up nigh impossible. At the same time, the atmosphere roared as it twisted, and lightning crackled.
All of that, culminated into the attack onto Shion, assaulting her all at once.
With the effect of the absolute ability of Ignore Defense attached, all for the express purpose of taking Shion's life――
Even with Ultimate Skill『Tyrannous Lord Susanoo』, nullifying all of that was impossible