The Prophet ﷺ said angels seek out circles of remembrance and surround them with their wings; Allah forgives all present, even one who merely sat with them. (al-Bukhārī & Muslim). He said: “No people sit remembering Allah but the angels surround them, mercy covers them, tranquillity descends upon them, and Allah mentions them to those with Him.” (Muslim).
العربية: عن أبي هريرة وأبي سعيد رضي الله عنهما عن النبيّ ﷺ: «لا يقعد قومٌ يذكرون الله عز وجل إلا حفّتهم الملائكة، وغشيتهم الرحمة، ونزلت عليهم السكينة، وذكرهم الله فيمن عنده». (مسلم).
Join a ḥalaqah of dhikr or knowledge at the masjid — great mercy descends upon it.