If your pastor invited muslims into your church in order to behead an adultress, would you not protest?
An anecdote Is a Protestant missionary in Africa had set up a stage sound system in a mixed Islam Christian pagan village and the Imam wanted it taken down so they could have their celebration. The missionary Invited the Imam to use the stage chairs and sound system and he and his helpers would run the sound system. After the Muslim celebration the missionary had his evangelical meetings the next few days and many believed on Christ. At the end of the meetings the Imam exhorted the new converts never turn back from their decision for Christ.