Not one can blame Cyrus for being vigilant. For a very, very long time, Cyrus was used to being an omniscient and omnipotent Lust God.
He had almost lost the emotion of being in the dark.
Especially when he was dark about almost everything surrounding him, from his rebirth to this point, there were many things he was clueless about, and now it started to get on his nerve, and the longed-buried emotions like the constant fear of the unknown started to surface.
Once someone becomes a god, they would lose almost all their emotions eventually because there is nothing ahead that could keep them going or looking forward to.
Cyrus wasn't any different, and of all the emotions, he cherished his emotions related to lust only since it was the only thing that made his entire existence. But right now, that attitude was nothing but a hindrance, and those long bury emotions were also important.