DMX -- Best Prayer Service EVER!!!

DMX makes the fieriest of pastors look like boring insurance salesmen ... this is one for the ages.

It all went down in Las Vegas before a concert ... when 44-year-old DMX asked the man upstairs to prevent stabbings, shootings and fighting from ruining his gig.

You gotta watch the faces of his makeshift congregation. They are either deep in prayer or doing everything humanly possible not to bust up.