To prevent people from building hill forts and towers in your base, it is NOT possible to make arrow shooting buildings while this GP is 'working'...
BUT there is one thing that i have recently used for my advantage largely while playing Kronos!
While Cease Fire is taking place, you CAN time shift arrow shooting buildings to his base!! in the minute of time of CF, you can shift 5 towers or 2 Palaces right under his town centre... This way you can fight at one side of the TC with 5 towers/2 palaces on your side when CF is over (they wont have the 2 towers on their side, because you deconstructed them), with 2 palaces under your TC's nose, with siege/destroyers or fanatics coming out, you can forget your base, especially when you have Burning Pitch and your towers/palaces do x2 or whatever damage vs. buildings...
bottom line: Make the Cease Fire bastards pay for using this god power!!! as soon as this happens time shift all your arrow shooting buildings under his nose and move your military to them, after CF is over, you can shift even more buildings there, taking away a TC from your opponent...
since they used Cease Fire, they were already in some kind of trouble, so you shouldnt have a problem finishing them off!!
AOE3 @ SM4RTASS
Dominating with: The French
HC: Le Moule
Explorer: Ze Chauvenist