رَبِّ ارْحَمْهُمَا كَمَا رَبَّيَانِي صَغِيرًا
Purpose Ask Allah to have mercy on your parents.
When to Use Read this when making dua for parents.
Source Quran 17:24

Transliteration

Rabbirhamhuma kama rabbayani saghira.

Meaning

My Lord, have mercy upon them as they raised me when I was small.