Rock STAB

[Frosty]

Current Rock STAB (only the part that matters here:

Adds an additional level of Priority (+0 to +1, +3 to +4 etc.) on naturally occurring level-up, egg, tutor, or TM attacks that increase only defense, special defense, or prevent damage (Full list: Acid Armor, Amnesia, Barrier, Defense Curl, Detect, Quick Guard, Harden, Iron Defense, Light Screen, Protect, Reflect, Skull Bash, Stockpile, Wide Guard, Withdraw).

Slate:

as is
remove protect for the list of empowered moves
limit bonus only to moves that enhance defense
limit bonus only to moves that enhance defense and reflect

Put in order of preferance

deadfox081
Dogfish44
Avnomke
AOPSUser
Matezoide
Frosty
Leethoof

 

[Frosty]

remove protect for the list of empowered moves
limit bonus only to moves that enhance defense and reflect
as is
limit bonus only to moves that enhance defense

 

[AOPSUser]

remove protect for the list of empowered moves
limit bonus only to moves that enhance defense and reflect
limit bonus only to moves that enhance defense
as is

 

[Avnomke]

remove protect for the list of empowered moves
as is
limit bonus only to moves that enhance defense and reflect

 

[Leethoof]

remove protect for the list of empowered moves
as is
limit bonus only to moves that enhance defense and reflect

 

[deadfox081]

remove protect for the list of empowered moves
limit bonus only to moves that enhance defense
limit bonus only to moves that enhance defense and reflect
as is

 

[Its_A_Random]

This was majority as of leet's post.