Complex sentence: After Mass as he walked away from the church with his cousin and the two other deacons and the wife of one of them followed by car the group was stopped by unknown armed men who ordered the woman to flee as they shouted and shot the remaining four.
Split into simpler sentences: After Mass as he walked away from the church with his cousin. The group was stopped by unknown armed men who ordered the woman to flee as they shouted and shot down the remaining four.