If you just want to "protect" a single term, wrap it in the "tic" symbol (upper right hand on keyboard), which can be applied with the monospace AB button inside the tiddler editor.
If you have a whole block you want to "protect", you can wrap the text in triple tic quotes:
```
this is my toc macro: <<toc root>>
```
which can be done by selecting your text and clicking on the monospaced block formatting icon (

) inside the tiddler editor.
hth