While it's not necessarily a story trophy, you will find that it is rather unlikely you'll miss getting this trophy. Early on, Lilliel will instruct you in the use of the Divinigram, which may look similar to the job board system of Final Fantasy XII. When you burst an equipment piece, you will end up gathering a Holy Icon based on the location of that pieces (head, arms, legs, misc.) which can be used here. During the tutorial, Lilliel will give you some free Holy Icons to use, so just find a decent spot to place them and welcome your new trophy!