In one narration the wording is: "Allah Almighty will save them from Hellfire through you. Sayyiduna Abu Bakr (may Allah be pleased with him) said: 'O Messenger of Allah, they are your clan and your people; pardon them, and Allah Almighty will save them from Hellfire through you.'"
Abu Ya'la recorded something similar,
and al-Tabarani also recorded it. Its chain contains Abu Ubaydah, who did not hear from his father (Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him)); however, its narrators are thiqat (trustworthy).