President Reagan last week signed 11 bills passed by Congress before it adjourned. The measures:

*Authorize the Cherokee nation of Oklahoma to lease for 99 years lands held in trust by the United States and ensure retention of civil service benefits for federal employes working for Indian tribes.

*Designate the week of Jan. 12 as National Fetal Alcohol Syndrome Awareness Week.

*Authorize the General Services Administration to receive donations for the Nancy Hanks Center.

*Designate a federal building in Salt Lake City as the Wallace F. Bennett Building.

*Designate the federal courthouse in Tucson as the James A. Walsh United States Courthouse.

*Designate the federal building and post office in Philadelphia as the Robert N.C. Nix Sr. Federal Building.

*Require the secretary of interior to convey a 55-acre tract near the Woodrow Wilson Bridge to the Maryland National Capital Park and Planning Commission.

*Waive the statutory congressional review period for acts of the District of Columbia authorizing the issuance of revenue bonds.

*Extend the deadline for the U.S. Sentencing Commission to publish sentencing guidelines.

*Extend the authorization of the Supreme Court Police to provide protective services for justices and court personnel.

*Extend until midnight March 17 various Federal Housing Administration mortgage insurance authorities, the Housing and Urban Development Department's rehabilitation loan program and other HUD provisions, various Agriculture Department rural housing authorities and the Federal Emergency Management Agency's flood and crime insurance authorities.