Respuesta :

Eid mīlad sa'aīd           
عيد ميلاد سعيد 

Or, something said on new years, as well as birthdays is:
 Kull 'am wa antum bi khayr كل عام و أنت بخي 
A blessing for all the years to come.

Answer:

Eid mīlad sa'aīd            

عيد ميلاد سعيد

hope it helps by the way I searched it up so there is your explanation.