tomorrow at night means غدا مساء ,,,ghadn mas`en. see u tomorrow at night means اراك غدا مساء ,,,,araka ghadn mas`en.

tomorrow means ghdn in formal arabic and in informal bokra. at night mass3n or be lel( be is approsition like at in english fe or be its okay). so we say in formal first araka ghdn msaan or bshofk(see) bokra

You can say :radan fi allayl, when speaking classical arabic. tomorrow at night:radan fi allayl:Manana por la noche. See you tomorrow:Araka radan fi allayl:Nos vemos manana por la noche.the best and only way to express yourself that anyone can understand is in classical arabic both speaking and writting . keep it up and good luck

say " lailat alghad" in standard tongue say " bokra belel" in slang tongue

يكمنك أن تقول أراك مساء الغد