Diaby was forced out of the 4-1 win over Bolton at the weekend with an ankle injury after a high tackle from Trotters defender Paul Robinson. It was feared the midfielder could be set for a lengthy spell on the sidelines.
But the big Frenchman will sit out Wednesday's Champions League visit of Braga and Saturday's trip to face Sunderland.
He should be back in contention for next week's Carling Cup clash with fierce rivals Tottenham.
Crunch: Diaby feels the full force of Robinson's tackle at the Emirates on Saturday
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