Tavalodet mobarak (تولدت مبارک).

(تولدت مبارک) is the standard Persian phrase for "Happy Birthday," literally translating to "may your birth be blessed". While widely used in Iran, its roots are primarily Arabic, with the word tavalod (birth) and mobarak (blessed) both having Arabic origins. Essential Phrases

The last syllable is pronounced like "et" in "et cetera".