I had a dealer muck my cards once also while sitting in seat 10. That's a bad position to be in.
Afterward, at another poker room, whenever I got seat 10, I started putting my chips in a straight line and making a small wall to stop dealers frisky hands. One dealer got mad about it, but I didn't care. I donk like my chips on the rail in my face. I keep them out a little.
I now use a card guard 100% of the time. I highly recommend it.