Sunfire Ganyu (w/o shield) rotation
Ganyu burst, Jean burst (swirl cryo), Bennett burst, melt shots, Xiangling burst, melt shots, repeat.
Sunfire swirls apply 2U Pyro, so you can melt while under Ganyu burst.
For a more practical version, swap Xiangling with Diano/Zhongli so you don't risk getting smacked around.