When breaking the fast - Iftar اللَّهُمَّ اِنِّى لَكَ صُمْتُ وَبِكَ امنْتُ [وَعَلَيْكَ تَوَكَّلْتُ] وَعَلَى رِزْقِكَ اَفْطَرْتُ

When beginning the fast - Suhur (sehri) وَبِصَوْمِ غَدٍ نَّوَيْتَ مِنْ شَهْرِ رَمَضَانَ

On the authority of Anas (may Allah be pleased with him): The Messenger of Allah (may Allah bless him and grant him peace), used to say the following when the month of Rajab began. اللهم بارك لنا في رجب وشعبان وبلغنا رمضان

It is related by Umar Ibn al-Khattab (رضى الله تعالى عنه ) that he heard the Messenger of Allah (صلى الله عليه وسلم ) say: The actions are but judged according to intentions; and to every man is due what he intended.

It needn't be the case, just follow these directions to achieve great results every time, Insha'Allah.

بِسْمِ الله اَوَّلَهُ وَاخِرَهُ

بِسْمِ الله وَعَلَى بَرَكَةِ الله