After Iftaar

Recite:

ذَهَبَ الظَّمَأُ وَابْتَلَّتِ الْعُرُوقُ وَثَبُتَ الْأَجْرُ إِنْ شَاءَ اللَّهُ

"The thirst has quenched and left wetness and with the will of Allah, reward is proven (certain)" 

(Abu Dawood etc).