Protection Warrior is a solid physical tank, able to absorb and mitigate damage. However, in Wotlk, their survival cooldowns are above the average, ending up being the least competitive tank in the meta. They are still viable to clear all content, just need slightly better healers.

Rotation for Protection Warrior Wotlk

Protection Warrior Priorities

Charge/Bloodrage > Shield Slam > Shield Block > Revenge > Devastate > Heroic Strike at 40+ Rage > pop cds to mitigate damage

Tips

Keep vigilance up on the best DPS or, on rare occasions, a healer.

For AOE switch Heroic Strike to Cleave and add Thunder Clap.

Retaliation can be used before engaging to increase the initial threat.

Warrior has the best toolkit to mitigate physical damage, however against aoe spell damage it has a rough time, unfortunately making it the least popular choice in ICC progression.