Hi Christy! I already commented about the slippery slope of determining which words authentically belong to a language in your post about non-Arabic alternatives to amiina, so I won’t say anything about that again here 
I don’t know of any other words for “benediction” besides dugawu, duba, etc. This could be because the concept of a benediction in West Africa originally comes the Islamic tradition and therefore from the Arabic “d-3-a” (دعا).