Being condemned at the stake stands for being punished for your beliefs or your difference, and folk tradition also reads fire here as harsh purification of an old self.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.