Before every action: eating, studying, travelling
بِسْمِ اللَّهِ
bismiLLāh
In the name of Allah
Greetings, courtesy, and small talk — the phrases you will actually use, with transliteration and context.
بِسْمِ اللَّهِ
bismiLLāh
In the name of Allah
فِي أَمَانِ اللَّهِ
fī amāni LLāh
In Allah's protection (farewell)
مَا شَاءَ اللَّهُ
mā shāʾa LLāh
What Allah has willed
جَزَاكَ اللَّهُ خَيْرًا
jazāka LLāhu khayran
May Allah reward you with good
أَسْتَغْفِرُ اللَّهَ
astaghfiru LLāh
I seek Allah's forgiveness
الْحَمْدُ لِلَّهِ
al-ḥamdu liLLāh
All praise is for Allah
إِنْ شَاءَ اللَّهُ
in shāʾa LLāh
If Allah wills
بَارَكَ اللَّهُ فِيكَ
bāraka LLāhu fīk
May Allah bless you
سُبْحَانَ اللَّهِ
subḥāna LLāh
Glory be to Allah
السَّلَامُ عَلَيْكُمْ
as-salāmu ʿalaykum
Peace be upon you (universal greeting)