. . . and will they take indian national because i heard they dont treat indians well
Sorry to say it this way, but from what I've seen, that comment is total "crap." There are a number of Indian pilots here, 3 of them (well one recently left to pursue an opportunity at another airline) are well-respected individuals in the training department (two of the remaining ones are in Management of the training department).
Sure, you have some minority level of ethnic intolerance by a few individuals at any multi-cultural company, but it is directed at pretty much any ethnic group including the locals.
However, I expect that as far as ab-initio goes, the program will largely be one for Bahrainis, and that, IMHO, is the way it should be. After all, you wouldn't expect an Indian airline recruiting foreign ab-initio cadets either, right?