Verses and lines of dedication of merits: Does one like to share traditional and personal verbal ways?
There are probably as many answers to this question as there are Buddhists, but as you ask the question to all, I thought maybe I can offer something about the rule, rather than the form.

There are several textual sources regarding what is appropriate for dedication - in general one may dedicate ones' actions any way one may wish, but then the behaviour does not lead to liberation, and is therefore not Dharma activity, unless the dedication is in line with Dharma activity.  

These are the four ways of dedication that are in accordance with Dharma activity, as I have been taught from within the Himalayan tradition:


Dedication towards one's own liberation and enlightenment.
Dedication towards the liberation and enlightenment of all beings.
Dedication towards the longevity of Buddha's words. 
Dedication towards the longevity of the Sangha and one's Dharma teachers.


Of these four, the best is the first because it involves taking personal responsibility for the Buddha Dharma through the greatest means possible.