This guitar lick is based around the D Minor Pentatonic scale at the 10th position. The rhythm and lead guitars are in Drop D standard tuning although the lead does not use the 6th string so you can play the lick in standard tuning. I used dotted quarter notes in the lead which creates a tension with the underlying rhythm guitar that I kind of liked. If you prefer the parts to interact more closely play the initial triplet with eight notes and the dotted quarter notes as quarter notes.