I saw a previous post asking about how to make arabic charecters appears in english website, and this was answered by making the database UTF-8,
Mostly the problem comming from the translation it self , as if it's UTF-8 you will find the charecters appear as the picture attached to this post, Please Arabic only can be displayed probably if it been saved as UTF-8 without bom , or UTF-8 bin , so all the files need to be re-translated and saved in this format , Sure if it's saved as ANSII it will appear like this "??????????? ????????".
Again from the DB- PHPmyADmin Collation of tables/DB should be : UTF-8 bin
" ALTER DATABASE `_fusion` DEFAULT CHARACTER SET utf8 COLLATE utf8_bin"
This should solve the Arabic problem premenantly ...