Indeed, those who are with your Lord are the angels, blessings of Allah be upon them. And the meaning of 'with' is the proximity of nearness and closeness to the mercy of Allah, glorified and exalted is He, due to their devotion to His obedience and seeking His pleasure. They prostrate to Him and dedicate their worship to Him, associating nothing with Him, and this is an implication regarding others among the accountable beings.

From the Messenger of Allah, blessings and peace be upon him: 'Whoever recites Surah Al-A'raf, Allah will place a barrier between him and Iblis on the Day of Resurrection, and Adam will intercede for him on the Day of Resurrection.' [[I mentioned its chains of narration in the Tafsir of Al-Imran and it will come at the end of the book.]]