The Holy Prophet (saww) is reported to have said, “On Sunday, perform the ritual bath (Ghusl) and ablution (Wudhu). Then, offer a 4-Rak’ah prayer (prayed as two sets of 2 Rak’ahs each).
In every Rak’ah, recite: Surah Al-Fatihah (once), 
Surah Al-Ikhlas (3 times), Surah Al-Falaq (once) and 
Surah An-Nas (once)
After completing the prayer: