And shortly afterwards the Bolsheviks did take a lot of church property, but they looked at it no differently than taking the property of the big landowners for the use by the peasantry. IOW, it wasn't because they were churches that the property was taken, it was because the peasants needed land and the land was tied up in "Ownership" by the feudal system AND the church. Bolsheviks, at least at first, pretty much ignored the church. Now later in the Thirties, I think there was more active persecution, but not at first.
All that said though, I think it would be disingenous to think that any sort of God has a place in Marxist thought. It is by nature a materialistic system. However, I don't think anybody's private religion is an automatic disqualifier to being a Marxist. Just don't try to bring it into governance. 
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