Invocation for someone who does good to you

جَزَاكَ اللَّهُ خَيراً

Pronunciation

If someone does you a favour and you say: (Jazakal lahu khayran.) then you have indeed excelled in praysing him

English meaning

If someone does you a favour and you say: (May Allah reward you with goodness.) then you have indeed excelled in praising him.