After logout while clicking on browser back button redirecting to the previous page in asp.net mvc

[AllowAnonymous]
     public ActionResult LogOff()
     {
             FormsAuthentication.SignOut();
             Session.Abandon();
             Session.Clear();
             Session.RemoveAll();

public ActionResult Index()
{
        return View();
}

What I have tried:

i have tried by using this code it's not working?
   protected void Application_BeginRequest()
        {
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.Cache.SetExpires(DateTime.UtcNow.AddHours(-1));
            Response.Cache.SetNoStore();
        }