Translation:

167. And those who followed would say: "If only we had one more chance we would clear ourselves of them as they have cleared themselves of us." Thus will Allah show them (the fruits of) their deeds as (nothing but) regrets nor will there be a way for them out of the fire.

Notes (Tafseer)

168. Our deeds are irrevocable and we must pass through the Fire of repentance and regrets.