I think that may have been the kidou Momo uses here.
Bleach 129 page 16 | One Manga
My theory about his shikai is around here somewhere, but I think he has the ability to prevent reiatsu based attacks. It's not really an effect as so much a burst he has to fire to accomplish this. He does it against Grimmjows cero, he also notices Ichigo about to perform a GT against him and he shoots one there as well.
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She completes my Equation.
Wakka wakka, who wants to hear a funny ass joke?