Phoebe was indeed struck by the explosion…
She was supposed to appear beside Nerissa but the Bronze Tier Bat had exploded on that side… Although she was able to protect herself, it at least delayed her from killing Nerissa.
It pushed her away and Nerissa had the time to get closer to Agatha.
Phoebe grunted after seeing two more Automatons beside Nerissa.
As for Luna, Phoebe had already forgotten about her since she believes that she'll die in just a few more seconds. After all, she was able to critically injure her and she also left the corruption seed in her body…
In ten or so seconds, the Corruption Seed would devour Luna and she would experience an extremely horrifying pain until she dies. Phoebe wanted to torture her since she was extremely angered by that stone she was holding.
There is no cure for this Corruption Seed once planted and it's something that even the Creed of Eiqehin wouldn't be able to stop…