Nick couldn't concentrate, there was too much at stake here and he was totally losing his cool. His focus was broken when, as expected, Bellatrix Lestrange targeted the girl's. Damn her he thought as she slammed them against a wall, three on one was usually odd's he would have taken but really, a crippled teacher, a fifth year and a sixth year against Bellatrix Lestrange. Nick bit the bullet and decided to do something that he would not usually do for anyone, but Christabelle was there. Taking a deep breath he turned away from Matt and launched the counter curse to the binding Jinx, then blasted the Cruciatus Curse away from Christabelle. He couldn't let her feel pain like that and he was pleased to see that the curse was rendered useless. Levelling his wand he aimed at Bellatrix "AVADA KED---"
Then it hit him, Matt's Crucio curse which he had totally forgotten about. The spell hit his upper arm which burned violently causing excrutiating pain, Nick couldn't imagine what it would have been like if it hit him in the chest. Falling to his knees he felt the effects of the curse subside slightly, Matt obviously had not kept Nick under the control of the curse, why? Probably because he had not expected it to make contact. Sweat trickled down Nick forehead as his breathing increased, he rose to his feet trying to foget about the pain and returned his attention to Matt. He felt dizzy and groggy, Nick's hearing also felt a little impared but he would be ok in a minute or two. He non-verbally cast the Crucio curse back at Matt, followed by the killing curse.