NIST 800-171 R2Here is the link for NIST 800-171 R2:
https://csrc.nist.gov/publications/detail/sp/800-171/rev-2/final
Be sure to use the Security Requirements Spreadsheet:
https://csrc.nist.gov/csrc/media/Publications/sp/800-171/rev-2/final/documents/sp800-171r2-security-reqs.xlsx