What was that?

Yesterday night, I have a nightmare? The whole background is black then the word "LUCIFER" in white was so big in front of me. Then I just shout "HOLY SPIRIT!" and woke up. When I woke up, I was sweating cold sweat. (It's that called cold sweat?) Anyway I wonder why I have such weird dream. Is that God reminding me to constantly connect with the Holy Spirit? I know I have to stay connected. But it's that God reminding me about that or other stuff? Or is it that at that moment I was going to be attack by the Satan? Maybe he is trying to kill me? Then the Holy Spirit came to save me. Lord, please tell me.