Returning the Islamic greeting
وَعَلَيْكُمُ السَّلامُ وَرَحْمَةُ اللهِ وَبَرَكَاتُه
وَعَلَيْكُمُ السَّلامُ وَرَحْمَةُ اللهِ وَبَرَكَاتُه
WaAAalaykumus-salamu warahmatullahi wabarakatuh
Translation
And upon you be peace and the mercy of Allah and His blessings.
When to recite
Said in response to the greeting of Assalamu alaikum.
Source / Reference
Abu Dawud 4/350