For Textmate 2 the key bindings that @Allan Odgaard posted in a related post are perfect:
In TextMate 2 going to matching brace can be done with ⌃↑
  and ⌃↓. These keys can also be used with shift
  (⇧) to select to matching brace.
yet @MaratC is correct - they are bound to system wide Mission Control functions. 
These can be changed in: 
System Preferences... Keyboard... Shortcuts pane/tab:
   in the Mission Control Section. 
After choosing alternative shortcuts for mission control, go to AppleMenu... Force Quit.. Relaunch Finder and the shortcut keys will be available in TextMate.