Yes, it may be hard, or it may be easy, to leave religion out of the workplace. Depending how religious you are, and how pervasive religious practices are in your culture. But it is in a totally different scale as leaving politics out of the workplace, or keeping politics out of the business.
As an example. If you make a strict separation of religion and the workplace, you just made a political decision. An employee who’s religion dictates they prey every morning, and you ask them to do so outside of the workplace, then you are doing politics.
The power dynamics involved in running a business and having workers means that you must make political decisions at some point. It is not like being an atheist because: a) a business is not a person, b) a religious decision usually does not affect people other then you self, and c) often being “apolitical” and not taking a stance, is simply taking a stance with the status quo. Not doing your morning prayer is not this nuanced.