O Allah, make us among those who fast and those who pray at night. — Fasting
اللَّهُمَّ اجْعَلْنَا مِنَ الصَّائِمِينَ الْقَائِمِينَ
Transliteration: Allaahummaj-'alnaa minas-saa'imeenal-qaa'imeen
Translation: O Allah, make us among those who fast and those who pray at night.
Reference: General supplication