اللَّهُمَّ تَقَبَّلْ صِيَامِي وَقِيَامِي وَرُكُوعِي وَسُجُودِي
Allahumma taqabbal siyami wa qiyami wa ruku'i wa sujudi
O Allah, accept my fasting, my standing in prayer, my bowing, and my prostration.
The anxiety of acceptance — will Allah accept my Ramadan? The Salaf used to spend six months after Ramadan asking Allah to accept the worship they did during it. Acceptance is not guaranteed by performance. You can fast perfectly and have it rejected because of a character flaw. This du'a asks for the one thing that matters: that your effort counts, that it registers, that it is not returned to you empty.
Related Du'as
اللَّهُمَّ بَلِّغْنَا لَيْلَةَ الْقَدْرِ وَاجْعَلْنَا فِيهَا مِنَ الْمَقْبُولِينَ وَلَا تَحْرِمْنَا خَيْرَهَا وَاكْتُبْ لَنَا فِيهَا الْعِتْقَ مِنَ النَّارِ
O Allah, let us reach Laylatul Qadr, make us among the accepted in it, do not deprive us of its goodness, and decree for us in it freedom from the Fire.
Atharاللَّهُمَّ إِنَّكَ عَفُوٌّ كَرِيمٌ تُحِبُّ الْعَفْوَ فَاعْفُ عَنِّي
O Allah, You are the Pardoner, the Most Generous, and You love to pardon, so pardon me.
Sahihاللَّهُمَّ 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.
Hasanاللَّهُمَّ تَقَبَّلْ مِنَّا إِنَّكَ أَنْتَ السَّمِيعُ الْعَلِيمُ وَتُبْ عَلَيْنَا إِنَّكَ أَنْتَ التَّوَّابُ الرَّحِيمُ
O Allah, accept from us, for You are the All-Hearing, the All-Knowing. And turn to us in mercy, for You are the Acceptor of repentance, the Most Merciful.
Sahih