Is das badanya Russian If so what is the English equivalent?

"Das badanya" is not a Russian phrase. It appears to be a combination of the German word "das" (which means "the") and a possible misspelling of "badanya" which could be related to the Italian word "badania," which means "research."

Without more context, it's impossible to know what the intended meaning is.

If you could provide more information, like the source of the phrase, or what it was supposed to mean, I might be able to help further.