To dream of a genius represents your feelings about a person or situation that is never wrong. Stunning accuracy or insight. Feeling that someone can always be relied on for the right answer.
Negatively, a genius may represents feeling that someone or something always outsmarts you. Feeling intellectually inferior or that can never be good enough.
To dream of being a genius represents feelings of being infallible or smarter than other people. Feeling that you can always outsmart someone else. You may have had a good idea or breakthrough that other people admire.