Alhamdulillah, Sayyidina Rasulullah ﷺ always alive just like Shuhada (Martyr) are alive in the Presence of Allah ﷻ . Our Beloved Sayyidina Rasulullah ﷺ is always alive in the Presence of Allah and he shall never die.
Allah Says: { إِنَّكَ مَیِّتࣱ وَإِنَّهُم مَّیِّتُونَ } [Surah Az-Zumar: 30] Indeed, you are to die ( O Muhammad) , and indeed, they are to die. These people will push aside such verses from the Quran and come with bogus claims. The Rasuul (SAW) has transitioned to the barzakh and it is upon us as Ahlu Sunnah to counter such beliefs. May Allah Guide us all to His Path