Other AudioSuite Plug-In Utilities : Normalize : Reverse
 
Reverse
The Reverse plug-in replaces the audio with a reversed version of the selection. This is useful for creating reverse envelope effects for foley, special effects, or musical effects.
Reverse
To reverse an audio clip (or selection):
1. Select the clip you want to reverse.
2. Choose AudioSuite > Other > Reverse.
3. Ensure that Use In Playlist is enabled.
4. Click Render.