Jericho climbed out of one of the trucks and helped Lizzy. They'd heard the commotion like the rest, but rushing too quickly could mean getting left behind during the expected teleport so he insisted they stay. He sent Lizzy with someone he trusted and hurried to see what had happened.
Upon seeing the fallen Eli and Louis and Paul on the floor, he hurried to help others gather the two men up and carried them to the infirmary. Once they were secure he gave Kieran space and found Lizzy, she was crying and told him about Kristoph. The two of them then retired to their tent and he held his daughter until she fell asleep.