I have it on good authority that Mik's Scrolling battle text add on will do the job.

I've installed it, and it won't do this out of the box, but I've seen it suggested in other threads that you need to add a trigger that watches for abilities on party members and will report it to your main.

I will get this setup for my enhancement shammy at some point - and I'll try to post a basic tutorial on how to do so (unless someone beats me to it).