Peter's scream in his head was one order Nathan didn't need, as he'd dashed forward the moment he'd gotten his bearings and located Claire. It was that goal, getting to Claire, and the knowledge Peter was about to deal with the danger, that kept his own murderous urges reigned in, at least for the moment.
Scooping her up when he reached her, he didn't waste precious time checking her right there where the fight had already begun. He might not have super speed in the traditional sense, but honing his flying ability left him with an advantage he could use even in a somewhat enclosed space. A moment later, they were streaking across the parking garage to the opposite corner, away from the immediate area of the fight and close to the outside edge should a further retreat soon be necessary. Nathan dropped to the ground from the air and then to his knees to finally check Claire, who he only let go of enough to free one hand.
"Claire, it's me, it's Dad," he said as he cradled her jaw, looking down at her with what could only be described as clear fear, the identification of 'Dad' coming without thought.