Protect allows cards to be unaffected by specified special abilities. (See Cannot be).
All of the following phrases are protect abilities:
• Protect …
• Is protected from …
• Is prevented from being …
• Cannot be …
• May not be …
• May only be … by
• Must be … by
• Immune to …
• Ignores …
Notice that each of the abilities above does not prevent a special ability. They only limit the special ability to other targets.