Disable 'find cursor' shortcut in iTerm2
If you want to define the key sequence in another app, then make iTerm2 ignore it:


Go to iTerm2 Preferences... --> Keys
Click on + under the grid
Press ⌘+/ with cursor in the Keyboard Shortcut field
Leave the Action field value set to Ignore


If you want to use different action in iTerm2, assign the appropriate action in step 4.