I don't think you have to worry about whether or not Cipla is genuine stuff. I think it is.
However, I think the concern to have is whether or not you have genine Cipla stuff, or instead a Cipla knock-off.
The real danger in buying medications online is fraudulent packaging. I read a recent article about a fraudulently packaged prescription that was sold en masse in a Mexican pharmacy. I forget what the drug was, but they had taken a watered down version of it and sold it in counterfeited packaging to make it look like the name brand. Well, it turns out that the drug was not only watered down, but was also contaminated and made a bunch of people sick.
If it is a real concern to you, perhaps you could snap a digital pix of the pills and the packaging, and email it to the Cipla company?