Social Security Protection Act of 2011 - Makes it out of order in the Senate or the House of Representatives to consider any legislation that: (1) increases the retirement age or the early retirement age for individuals receiving benefits under title II (Old Age, Survivors, and Disability Insurance) (OASDI) of the Social Security Act on or after the enactment of this Act; (2) reduces cost-of-living increases for them; (3) reduces benefit payment amounts for them; or (4) creates private retirement accounts for any of the OSADI benefits they receive.