Praise be to Allah the Lord of the Worlds. May His peace and blessings be upon our Prophet Mohammad and upon all his family and companions.
The children of a full brother or a brother from the father`s side are excluded of heirdom by their paternal uncles or father`s brothers, as agreed by the Imams of the four legal schools. For more details, check {Moghni Al-Mohtaj, vol.19/pp.4-20} and {Al-Mawso`ah al-Fiqhiyah, vol.17/pp.21}. And Allah The Almighty Knows Best.