How to protect all my passwords saved in Google if I lost a phone? I save many passwords in Chrome. I used Chrome in my laptop and my android phone. If I lose my phone, how I can protect my passwords?
As Rexford commented, you should install and configure Android Device Manager on your device so that you can remotely lock it out.

You should also use full-device encryption, so that the passwords cannot be retrieved via physical access.

Finally, if your device's Chrome is set up to sync passwords, you should sign into that account on Chrome for PC and clear all of the saved passwords so that they will be removed the next time the device syncs: