The best bet is to look up the lists of embassy-approved lawyers posted on most embassy websites (according to your nationality). My experience is that whilst these tend to be rather expensive, I have been screwed over worse by lawyers recommended to me by friends, than by the people I was paying them to protect me against! Be aware also that when dealing with lawyers (as indeed with anyone I suppose),language is very important.
Any lawyer representing you will ask you to execute a "tawkil" or power of attorney. Be very sure of what powers EXACTLY you are conceding. Abuse of PoA's is a scourge in Egypt. Be also sure that your lawyer delivers to you ALL relevant documents at the end of the process, as well as the original tawkil: and DO take the trouble to go with him to Sharia Akari (who authorise these powers) to execute formal cancellation of the tawkil. Most people forget to do that, and I have heard of lawyers using expired or cancelled tawkils for their own ends.