My first reaction was to say this was a good idea, there must be more demand for Arabic-English translators than for general English teachers these days, but then I thought better of it. Is that actually true? It is actually a pretty narrow specialization,  there must be tons of immigrants from the Middle East who could easily get qualified, and demand is concentrated in some metropolitan areas. On the other hand, I see a continuing demand for ESL teachers all over the world. Something to investigate further.

The factor that might make a difference is age and experience and willingness to relocate, which would be more relevant to plain ESL That might make translation a more practical immediate alternative for Nabel, in principle. An 18-month certificate would be easy for him to get, except that...U of T's certificate does not include Arabic:

http://learn.utoronto.ca/courses-programs/languages-translation/certificates/translation

York only offers French and Spanish translation.