He tries to stop a Hollow-transformed Ichigo from mutilating the defeated Ulquiorra, and is attacked himself, but is saved just before being killed by Ulquiorra, who dies shortly afterwards.
He tries to stop a Hollow. He transformed Ichigo from. He was mutilating the defeated Ulquiorra. He is attacked himself. He is saved just before being killed by Ulquiorra. Ulquiorra dies shortly afterwards.