As the question says,

How can I bridge multiple interfaces to a single one on a Cisco ISR C891F but making each one able to communicate only to the destination interface?

Let's say I got GigabitEthernet0 to GigabitEthernet7.

How can I bridge the range GE1-GE7 to GE0 and make each interface only able to communicate with GE0 and not between each others?

Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.3(3)M6, RELEASE SOFTWARE (fc1)

As the question says:

How can I bridge multiple interfaces to a single one on a Cisco ISR C891F, but making each one able to communicate only to the destination interface?

Let's say I have GigabitEthernet0 to GigabitEthernet7.

How can I bridge the range GE1-GE7 to GE0 and make each interface only able to communicate with GE0 and not between each other?

Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.3(3)M6, RELEASE SOFTWARE (fc1)