I burst down one trash mob with skills, usually before it can get off its overdrive. After that I can easily heal through any damage the remaining one does. It takes 8+ turns to clear the first wave and 6-7 to clear the second. By the time I hit Garuda most of my skills are recharged and all eidolons are available, and my group is at full HP. I typically have full burst by the end of the first wave.