Rakesh Raja

This plugin hide content in posts and pages and display only when a user leaves comment. If page/post dont have a comment from user or its got deleated by admin, content will be not displayed.
This plugin uses cookie for that so this plugin will work when user allow website to set cookie.
Restrict it provides you a shortcode [wpgrestrict][/wpgrestrict], wrap your content with this shortcode and you are done.
In next version, I am going to to add restrict content by logged in user. Please let me know if you need any other way to restrict content.
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Restrict It

Restrict content in posts and pages with this plugin and display only when a user leaves comment.

SeventhQueen

New: Added the ability to give free access to some BuddyPress members based on specific profile field and value. 
Works with Paid memberships Pro.
This plugin helps you add restrictions for the following BuddyPress areas: 
* BuddyPress Members directory 
* Viewing other BuddyPress profiles 
* BuddyPress Group directory 
* Single BuddyPress Group page 
* Site-wide activity page
Paid Membership Pro integration. You can apply restrictions based on your already defined membership levels.

Restrictions for BuddyPress

Restrict BuddyPress pages or content for visitors or different membership plugins.

Restrict It vs Restrictions for BuddyPress