Use the Elephant to hide the crouching tiger. Talking mentally, Lilith told Cerberus what he had to do. How he should react through various scenarios that may arise. How he should act, how things should be done if they are to occur. Lilith spread things out without failure to provide information. From how he should react should he get blown away, keywords to be mindful of, and every turn, the action and the reaction Cerberus made was all made to bury Lilith's presence.
Use the anger to catch the Beast's attention. Frustration as the bait and the failure of using chains to mask the growing presence of the Priestess.
Not to mention, Lilith was using Divinity so recklessly to spread her divinity thin in order to have finer control of it by having less in her vessel. Setting the bait, the Beast took it and now, it was time to reel in the result.
SCRIEEEEEEEEEEEEEEEEEE!
In desperation, the Beast turned its back from Cerberus.
STAB!