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... Answered 2 months ago

It is highly recommended for every Shia Muslim to pray with Muslims from other sects in their congregational prayers, but we need to recite Sura Al-Hamd and other Sura for ourself. Such Salaah will be valid if it was performed inside the time not before it.
Jum'a prayers with non Shia Muslims is good but we need to recite Dhuhr Prayer as well.
Wassalam.