Disabling publishing of an asset will prevent Cascade from publishing any changes made to the asset.
The asset can be prevented from publishing by un-checking the "Include in Publishing" field. If an asset is not publishing, click on the asset, and navigate to the Edit tab, then to the Configure tab. If this box is unchecked the asset will not publish. If publishing is disabled at the folder level, no pages or files contained within that folder will be able to publish. Trying to publish any of these assets will result in the "Asset is not set to publish. Please enable publishing for this asset and try again." error.