How would you prove Allah's existence to an atheist?

Answer

In the name of Allah: If he has a mind, it is sufficient to alert him that as no action takes place without a worker and without any maker, the world cannot exist without the maker of a great world. In such a way, Allah’s closest friend the prophet Ibrahim (PBUH) encountered the tyrant of his time, saying to the tyrant: (Allah brings in the sun from the east. Can you bring it from the west? And the disbeliever was disappointed). Allah is the All Guide and knows best.