I must be lucky but I have 2 false percula, 2 yellow tail damsels, a saddleback clown, a 3 line damsel, and a six line wrasse with my zebra lion. he avoids them. Swims around, eats brine shrimp and krill (thawed from frozen) and never bothers anything.
The most aggressive is the saddleback clown. He's a real bully.