Hi,

By default for cancelling the multiple invoice there seems no option in Odoo, the process for doing the same thing for the multiple records in Odoo is to switch to tree view, select the records and click the corresponding operation from the actions button from the top. 

Even though we can see the Cancel button in the form view(after installing the account_cancel module), we cannot see the same under the action button in the list view.

For the same there is a third party module available in the app store for free, you can use it: Cancel Multiple Invoice

Thanks