In Saudi there is more than one dialect , but if you want the dialect of Riyadh its :-
For males :
1- ENT FADHI ALHEEN AGDAR ATKALLAM MA'AK ? , (إنت فاضي الحين ؟ ، أقدر أتكلم معك ؟)
2- ETZAKKAR , LA TENSA (إتذكر ، لا تنسى)
3- i didnt know it clearly but i will say it in my way , YAKHY MARRAH TETAFFISH (ENG : dude , she's so boring / ARB : ياخي مرة تطفش)
4- WALLE' ~or SHAGHEL~ AL-LAMBA {on} , TAFFY ~or SOK~ AL-LAMBA {off} .. (ولّع -شغّل- اللمبة "on" / طفّي -صُكْ- اللمبة "off")
Feel free to ask more questions about Arabic :)