Musannaf Ibn Abi Shayba 3:5590

Waki’ narrated to us, he said: Yunus narrated to us, from Abu Ishaq, from Bakr bin ‘Amir, from al-Rabi’ bin Khuthaym, who said: When the Imam says, "Not of those who have evoked [Your] anger or of those who are astray," then seek help from Allah with whatever you wish.