Inquisitor (20) with:

Equipment:
Pistol (1) close combat weapon (1), Consecrated Scrolls (5)

Psychic Powers:
Word of the Emperor (10), Sanctuary (15)

Henchmen:
2 Hierophants (16), 1 Familiar (6)

Cost: 74 points

Effects:
Daemons must either pass both a Ld test and a Difficult Terrain test to assault the Inquisitor because of the combined effects of Word of the Emperor and the twin Hierophants, or treat a 3" radius circle around the Inquisitor as impassible terrain as the Inquisitor sacrifices his movement/shooting, depending on the powers used. The Hierophants also impose -1 Ld to nearby daemons.

Tactics:
Ideal for protecting a location from ravaging daemons, the Exorcist Inquisitor can repel daemons using the power of his mind alone. Stick him on the objective, engage nearby conventional enemy squads and the howling daemons baying for blood simply cannot touch the Inquisitor in his hemisphere of psychic force. Combined with Grey Knights, nearby daemons will be on -2 Ld and therefore become highly unstable.