Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answer updated 2 years ago
Praying with Muslims from other sects apart from the followers of Ahlul Bayt (AS) is allowed and recommended. Friday prayer leader has conditions including being a pious follower of Ahlul Bayt (AS). You can pray behind non Shia Shaikh and you get the reward of praying with other Muslims, but it will not be a valid Friday prayer, and you must perform your own Dhuhr prayer either before or after.
Wassalam.