Nê-hát Gia-xơ A-hmét

 In Vietnamese, names are written using the Latin alphabet, so your name stays mostly the same. A natural phonetic-style rendering would be:

Nê-hát Gia-xơ A-hmét

• Nê-hát ≈ Nehad
• Gia-xơ ≈ Jaser
• A-hmét ≈ Ahmed

However, in practice, most people in Vietnam would simply write it as:

Nehad Jaser Ahmed