Gloria created a very powerful ice beam and shot toward Sam. But Sam doesn't have to do anything. He just simply created a barrier in front of him and the ice beam hit that barrier.
Instantly, a big impact was created on that place. Sam did not get affected by that impact. You can say that he did not even feel that impact as the barrier in front of him deflected all the impact toward Gloria.
Fortunately, despite feeling that much impact, Gloria is still able to hold on and continue to use the ice beam. She wanted to break the barrier in front of Sam.
Unfortunately, she realized it would not be possible. Instantly, she disappears from her previous location using the ice escape technique. The ground beneath Sam had already frozen and Gloria appeared behind Sam.