Complex sentence: 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.
Split into simpler sentences: He tries to stop a Hollow-transformed Ichigo from mutilating the defeated Ulquiorra. However, at the last minute, Ishida is saved by Ulquiorra, who dies shortly afterwards.