Originally Posted by
Yeager
Stick with Indi-Refresh on yourself and alternate between T1 and T2 nukes to kill Luopans faster. As long as Indi-Refresh is up MP shouldn't be an issue. If you get hit hard by one of her nukes, or if your HP start getting low, drop a cheap MP Luopan of your own (Geo-Regen) and pop it with Mending Halation to get about 1k if your HP back. Same applies if your MP gets low (Radial Arcana)
Based on your original post, it looks like you should have enough MAB to finish the Luopans quickly.
As for recognizing which nuke to use, rather then eyeball the Luopan's aura, you should learn and memorize the element of each Luopan instead. It will also save you a great deal of time. If you have Monster Ability text filtered out, consider removing that filter for this fight, because knowing what Geo spell is being cast on you will make a huge difference in terms of knowing what element you need to nuke it with.