Well, This trendline is so important that it can very well termed as Life Line.
Close below this trendline can bring a doomsday for ICICI. If not then its a sign of relief.
Good Risk to Reward for buy:-
Buy tomorrow if it does not open below the trend line and and keep holding this till it closes below the trendline.
If it does then reverse the position and Short this.....
As of now, am suggesting it as a long trade.