There's no protecting your tie-rod but, you can invest in a heavy duty replacement and a good one will take a lot of punishment. I personally prefer Currie tie-rods as I have found them to be the best and strongest you can get but, I'm sure others will chime in with how good their Synergy or Rock Krawler is. I personally wouldn't waste your money on a set of orange knuckles that will only raise your tie-rod about an inch higher than stock. I can assure you that you will still hit it.
As far as other armor goes, your Jeep already comes with most of what you need. If you have a manual, I would get an EVO oil pan skid plate as it does a great job of protecting your oil pan without being too big and bulky. If you have an automatic, I would get the whole ProTek skid system that EVO makes as it will do a great job of protecting your sump pan and cooler lines as well. That's all you really need.