Excluding custom fields from SAML-based Sign-on

Hi, in my organization we enabled SSO with a third party platform and it's working.

We need though to excluded some fields in AD from syncing.

We want prevent the following fields from syncing/being managed by ADSync:

-Manager

-Division

-Location 

-Employee-start-date

Does anybody know how we can exclude those fields from the SSO/ADSync?