Wa iyyak. When I make this supplication (Al-Baqarah 201) it's for all muslims, and I say it everyday. Anyone who is a muslim by the time I make this dua, is included.
[FONT="]Qatada asked Anas which Supplication Allah's Apostle (ﷺ) frequently made. He said:
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[FONT="]The supplication that he (the Prophet made very frequently is this:" O Allah, grant us the good in this world and the good in the Hereafter and save us from the torment of Hell-Fire."
He (Qatada) said that whenever Anas had to supplicate he made this very supplication, and whenever he (intended) to make another supplication he (inserted) this very supplication in that. Sahih Muslim[/FONT]
Abu Darda reported: The Messenger of Allah, peace and blessings be upon him, said, “No Muslim servant supplicates for his brother behind his back but that the angel says: And for you the same.” [FONT="]Sahih Muslim[/FONT]