Resurrect happens after card attachments and terrain effects. So tombstones killed by burning at the start of the turn will return to life, if there are still tombstones alive (that haven't been killed on previous turn or at the start of the turn by card attachments and/or terrain).
It was the hint that actually got me trying to work things that way. Maybe the hint could be a little more clear? (I know hints are, by definition, not supposed to be transparent, but still...) Thx for the info.