Damn... We again start with the "zero sum game" theories... Something which works in Pakistan's interest is not necessarily against Indian interest... and thus, I think we are confusing two important points
1. Russia's relationship with Pakistan: Russia is looking to come out of its economic slump and with reducing chinese demand for their products and coupled with the extremely high availability of liquid assets like GAS and infra companies and with the need to diversify business interests, Pakistan is as a smart strategic bet... Pakistan needs help to build its infrastructure and Russia needs a demand market and that fits perfectly and Russia might also look to take Pakistan's help to enter Middle east high tables (at least a supporting voice will certainly help) as Russia tries to spread its strategic clout in middle east, to establish themselves as big brothers of Asia and to hedge their bets against US and/or China (obviously Russians will not want a super strong china and very weak russia in Middle east and africa... that is just not good business for them)... So, to me , it sounds like a win win bet... Pakistan is looking for some help and russia is looking for some strong markets for the products that they can offer.
Russia has recently come out strongly and warned US and others against attacking Iran. Central Asia is their backyard and as per them, US has no business being there. It is something that they take seriously. this is a genuine extension of their outreach to take a hurt ally of US (Pakistan) in their fold, in a mutually beneficial relationship.
2. Russia's relationship with India: That is a time tested relationship and is independent of any other relationships. India has maintained it's relationships with Russia and Russia has backed India almost always. That does not mean that either of the countries are conjoined to not even work with others. Russian interests and investments in Indian nuclear power and indian involvement in joint defence programs (and the visible lack of interests in relevant defence hardware from US) is actually growing. I have no reason to believe that this, 'all weather' 'absolute' relationship between India and Russia turns ' hostile or relative' by a single initiative, action or statement. India and Russia are two large nations with independent existence and interests in global affairs. At the same time our civilian and defence partnerships have a certain 'absoluteness and consistency' about them.
Just because Russia has extended a hand at Pakistan does not mean anything for Indo-Russian friendship. So, why do we even try to defend or to find any hidden logic in this simple statement?
What is interesting to notice (as a student and observer of economics and geo-politics) is the quickly changing equations between US and Pakistan and the manouvering at Pakistan's and US's ends to find new friends. It also presents a great lesson for us Indians... Blind trust Americans at our own peril... always keep an eye open for their silly escapades nature... my 2 cents