Formal:
* سلام عليكم (salaam aleikum): This is the most common and respectful greeting in Arabic, meaning "Peace be upon you." It's used for everyone, regardless of their religion.
Informal:
* السلام (alsalam): This is a shorter version of "salaam aleikum," often used between friends and family.
* صباح الخير (sabah al-khayr): Means "good morning" but can also be used as a greeting to express peace and well-being.
* مساء الخير (masa'a al-khayr): Means "good evening" and similarly can be used as a greeting for peace and well-being.
More specific:
* الله معك (Allah ma'ak): This literally means "God is with you," and conveys a sense of protection and peace.
* ربنا يحميك (Rabena yihmik): Means "May God protect you" and expresses a desire for peace and safety.
Important Note: Lebanese Arabic uses a lot of colloquialisms and dialect variations, so there might be other ways to express "peace be with you" that are specific to a particular region or social group.
When choosing the best expression, consider the context, your relationship with the person you are speaking to, and the level of formality you wish to convey.