Why would you think so, at least in the past? It is no secret that Russia is supporting Iran's nuclear ambitions. What is less well known in western media is that Putin is building his own personal Islamic caliphate in Chechnya with his puppet "president," who keeps a sex dungeon and imposes Sharia, in between naming streets after Putin and delivering 99 percent of the vote for Putin's party.
Russia is also an ally of Syria, not because he is pro-Christian. Syria is just as rabid against the Jews as the Islamists.
Whoever thinks Russia and its underground communist structures are interested in waging a war against Islam have not been paying attention.
Why would i think that Russia could be an anti Islamic partner? Did you read the whole post? They could be a partner where our interest align. That is rare. We backed Islam over Russia in Afghanistan. They back Iran over the U.S. Real Politics at work.