Check this page out: https://alexmg.com/introducing-the-autofac-integration-for-service-fabric/
Right from the maker of Autofac. You'll need to import the Autofac.ServiceFabric NuGet package, which is currently in beta.
Note: As of the current version (1.0.0-beta1) the InternalsVisibleTo functionality mentioned in the article doesn't work, so you ** HAVE TO ** set your registered Actors and Reliable Services to "public" visibility.
Note 2: The dependencies on the Autofac.ServiceFabric NuGet package aren't set correctly, so you'll have to "Update-Package Autofac -Version 4.6.0" since 4.5.0 isn't good enough.