In Shinsekai Yori episode 10, Saki encounters a Tainted Cat which attacks her in the neck, but fails to damage her due to a necklace she's wearing. While the cat is biting the necklace, she mumbles some words and after that the cat is killed.
The first impression I had was that she was defending herself. So she probably chanted something related to the way the cat was killed. But re-watching the scene, the cat had blood on its mouth despite not being able to damage Saki. What's the meaning behind this scene? What is Saki mumbling? Did SHE kill the cat or was it somebody else (like Shun)?