The rapper/singer, who reached the semi-final of the UK show in 2010, was joined by Becky G, who appears on the album version of the track.
'Oath' features on the US version of Sticks + Stones, which was released this year with a radically different tracklisting and different guest stars to the 2011 UK original.
Lloyd this month confirmed that she is working on her second album.
She recently collaborated with Sean Kingston for his new single 'Rum and Raybans', which is expected to be released in the near future.
Two contestants were eliminated from last night's X Factor USA, leaving eight singers in the competition.
Photo gallery - X Factor USA live show 7:
Copyright: Fox Ray Mickshaw