إِذْ When تَسْتَغِيثُونَ you were seeking help رَبَّكُمْ (of) your Lord فَٱسْتَجَابَ and He answered لَكُمْ [to] you أَنِّى Indeed, I am مُمِدُّكُم going to reinforce you بِأَلْفٍۢ with a thousand مِّنَ of ٱلْمَلَـٰٓئِكَةِ the Angels مُرْدِفِينَ one after another ٩
[Remember] when you were asking help of your Lord, and He answered you, "Indeed, I will reinforce you with a thousand from the angels, following one another."
— Come To Light