Authentic Supplication Number 137.

If the Prophet  was afraid of a certain people he would say 'Allahumma 'inna naj`aluka fee nuhoorihim, wa na`outhu bika min shuroorihim (157).

Footnotes.
(157) O' my 'ilah we put You to their chest-top [neck area], and we seek refuge in You from their evils.

Reporters.
Ibn Taymiyya referenced it to Abu Dawood, and An-Nisa'ee; and Al-Albani said it was of sound ascription, that Al-Hakim said it was sound and that Ath-Thahabi agreed with him. This hadeeth is #103 in The Authentic of Good Sayings.