The last standing gems are Euclase, who is now watching Phos marching at them with the army of Lunarians, and Jade and Cinnabar, who are with Sensei...Oh and Rutile with the unconscious Padparadscha I guess.
Either Phos will still continue the attack but Sensei disintergrate the Lunarians somehow, or after destroying all the gems in this chapter, Phos will just have the army pick up all the shattered gems and leave, so then Sensei will feel guilty for allowing this to happen. Bonus if this is where Phos gets the final replacement for their torso, completing the whole Seven Buddhist Treasure thing.