Normally film with an EI of 400 or less can go through the carry-on X-Ray with no problem. I've had my black and white film through up to 6 X-rays with no problem. EI 3200 film is a different story and should be hand-checked. Although I did inadvertantly put some through the carry-on X-Ray once with no problem.
I travel a lot, including a couple of trips to the middle east (not to Lebanon though) and I've never been refused a hand check. Keep the film in clear plastic bags that are easy to pull out and put back in your carry-on luggage so you don't hold up the lineup though.
Whatever you do, don't put film in the checked luggage. Those X-rays are really powerful