As the wave of destruction slowly expanded outward, John moved immediately. First, he dashed towards Onyx and Tano, picking the two of them up before dropping them off outside the Church itself. Then, he sprinted back into the main hall and picked up Sister Prizla who has now gone unconscious.
'Take care of her.' John ordered as he returned outside as the wreckage remains of the Church were turned to dust. Then, that wave of destruction halted for a moment before imploding like a star going supernova.
John's power is simply way too much for Sister Pria to handle. Like trying to stuff an entire bottle worth of drinks inside of a glass, it will eventually break the container, and that's what Sister Pria is experiencing right now.
Sister Prizla's desperate move was tactically sound, though even she could not grasp the depth of power for one of the Ten Fingers.