Requisites of treachery

There is treachery when the offender commits any of the crimes against the person, employing means, methods, or forms in the execution thereof, which tend directly and specially to insure its execution, without risk to himself arising from the defense which the offended party might make. The requisites of treachery are:
(1) The employment of means, method, or manner of execution which will ensure the safety of the malefactor from defensive or retaliating acts on the part of the victim, no opportunity being given to the latter to defend himself or to retaliate; and

(2) Deliberate or conscious adoption of such means, method, or manner of execution.[1]
[1] Cirera v. People, G.R. No. 181843, 14 July 2014.