The Bible says there is absolutely no place where God is not present. The Psalmist ask: "... Where can I flee from your presence?" (Psalm 139:7) Then he proposes possible hiding places:
Jesus said He is always there where two or three gathers in His Name (Mat.18:20). The same rule is true for God in all manifestations, in all religions. The tentacles of God's Omnipresence reaches into every nook and cranny of the world, into every Church, Mosque, Synagogue, Temple, every place of worship, every household, every individual.
There is indeed no place to hide from God, not even in so-called Atheism! There is indeed no way that any believer from any religion can deny the Presence of God in any other believer or religion or their places of worship.