There are many way to say like "Good bye"
- The most popular specially among Muslims its السلام عليكم "Assalamu' alikum " And its Answer وعليكم السلام "Walikum Assalam means "Peace be upon you" this is the best way .
- مع السلامه Ma'a Assalama like Bye in English and its Answer the Same "Ma'a Assalama"
- الوداع أو وداعاً "Al wada'a /Wada'an and the same for the Answer .
- And also said Among Muslims أستودعكم الله "Astawda'koun Allah or في أمان الله "Fe Aman Allah" It means and the Care of God its like "Take care " in English .-إلي اللقاء/إلي أن القاك / ألقاك علي خير Also these Forms is popular " Ala Al Liqaa / Ala an Alqak/ Alqak ala Khur ,.. Its like See you later in English .
Thanks = Shokran ^_^