إِنِّي صَائِمٌ إِنِّي صَائِمٌ
Inni sa'im, inni sa'im
I am fasting, I am fasting. (Say this when provoked while fasting.)
The Prophet ﷺ said: "Fasting is a shield. When one of you is fasting, he should not use obscene language or act ignorantly. If someone insults him or tries to fight him, let him say: 'I am fasting, I am fasting.'" This serves as both a reminder to yourself and a notice to the other person.
Related Du'as
اللَّهُمَّ تَقَبَّلْ صِيَامِي وَقِيَامِي وَرُكُوعِي وَسُجُودِي
O Allah, accept my fasting, my standing in prayer, my bowing, and my prostration.
Atharاللَّهُمَّ إِنِّي صَائِمٌ وَعَلَى رِزْقِكَ أَفْطَرْتُ فَتَقَبَّلْ مِنِّي إِنَّكَ أَنتَ السَّمِيعُ الْعَلِيمُ
O Allah, I fasted for You and I break my fast with Your provision. So accept it from me. Indeed, You are the All-Hearing, the All-Knowing.
Hasanذَهَبَ الظَّمَأُ وَابْتَلَّتِ الْعُرُوقُ وَثَبَتَ الْأَجْرُ إِنْ شَاءَ اللَّهُ
The thirst is gone, the veins are moistened, and the reward is confirmed, if Allah wills.
Hasanاللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
O Allah, You are the Pardoner, the Most Generous, and You love to pardon, so pardon me.
Sahih