Formal:
* من فضلك (min fadlik): This is the most common and polite way to say "please" in formal situations. It literally means "from your favor."
* لو سمحت (lou sam7t): This also means "please," but is a bit less formal than "min fadlik." It literally means "if you permit."
* أرجو منك (arjou mink): This means "I ask of you," and is used when you're making a formal request.
Informal:
* من فضلك (min fadlik): This can also be used in informal situations, but it's often shortened to just "فضلك (fadlik)"
* لو سمحت (lou sam7t): This is also used informally, but it's often shortened to just "سمحت (sam7t)"
* اتفضل (itfadl): This is a very informal way to say "please," and is typically used when offering something to someone.
Note: The word "please" is often implied in Arabic, so you may not need to say it explicitly. For example, you might say "أريد الشاي (uridu'l shay)" ("I want tea"), instead of "أريد الشاي من فضلك (uridu'l shay min fadlik)" ("I want tea, please").
It's important to note that there are many different dialects of Arabic, and the specific words and phrases used may vary. The above examples are just some common ways to say "please" in Arabic.