The basic principles of this are easy enough, but how to implement it in your case is hard to say without knowing more.
if ( !is_user_logged_in() ) {
auth_redirect();
}
Would redirect a non-logged in user to the login page
if (current_user_can('administrator'))
Would be used to identify whether someone had the admin role.
How to implement this is another matter. I recently made a custom page template for logged in users only to view data and I simply placed the first section of code above at the top of the template, with the rest of the page code in the ‘else’ statement. This could be extended further to identify if the user was also an Admin. However, you could also use an action hook to do this without using a custom page by applying the logic to a specific page ID or slug. Something like this.
The above might be enough to help you but if not, post a little more detail in your question. Specifically, how do you identify this particular page? By ID/Slug or have you created a template?