How to restrict a specific approver in the AP invoice BPM rules Job level Hierarchy

Summary:

Hi All,
We have a Requirement to restrict a specific approver in the AP invoice BPM rules who is already part of the List Builder- Job Level Hierarchy as per the workflow. 
The invoice should not route to his/her approval if this approver in included in the Job Level Hierarchy. Please let us know how to achieve this. 
Uploading one sample rule for reference, how can we modify this rule to restrict to not route the approval to this particular approver

The actual requirement is If an invoice is created with specific suppliers it should route to one specific approver and should not route to the approver mentioned above