Could anybody, other than a Moslem, do this in Saudi Arabia? I'll leave the answer to your imagination.
Christianity discourages praying on the street corner where everyone will see you because it makes the activity not only one of wooden formality, but of pride because others are to see how obedient and devoted you are so you can be proud of what a good servant you are.
The true God desires humble communion with those who know Him.
Of course that's just the tip of the iceberg when it comes to the contrasts to Christianity and Islam, despite the fact that some foolishly think both faiths worship the same God.