Which attacks will nullify Khepri's special?

I use Khepri a lot, specifically in Arena, and I've noticed that some moves nullify his blessing. For example, an ally who is blessed and then gets killed by Ao Kuang's ultimate will not be revived. I assume this has something to do with the "assassination" type of ultimate that Ao Kuang has, but I haven't seen another move consistently nullify the blessing like his ultimate always does.

Are there any other powers or ultimates that nullify Khepri's special, causing an ally to not be revived?