If you wanted to have Facebook like/recommend button in Arabic, here is a very easy way to do that.

Go to Facebook Like Social plugin page and configure it by adding your site, choosing  layout style, width and color scheme.

After you finish setting up, click on Get Code button. A pop-up will appear with final code for Like/Recommend button.

Copy the XFBML code and put it on your site. This solution is only for XFBML code.

You have to click on JavaScript SDK link at the bottom of pop-up screen.

This will open up JavaScript SDK page, where you will get the below line of code.

Copy the code and paste it just above the iframe or XFBML code which you have put in your page in earlier step.

Last step is just change the red highlighted text
“/en_US/” to  “/ar_AR/” .

You can see the final Arabic of like/recommend below