Good article bad proofing
the boy was not phased (fazed) by the incident
Definition of faze transitive verb
: to disturb the composure of : DISCONCERT, DAUNT
Nothing fazed her.
Criticism did not seem to faze the writer.
Definition of phase
1: a particular appearance or state in a regularly recurring cycle of changes- phases of the moon
2a: a distinguishable part in a course, development, or cycle
the early phases of her career
b: an aspect or part (as of a problem) under consideration
3: the point or stage in a period of uniform circular motion, harmonic motion, or the periodic changes of any magnitude varying according to a simple harmonic law to which the rotation, oscillation, or variation has advanced from its standard position or assumed instant of starting
4: a homogeneous, physically distinct, and mechanically separable portion of matter present in a nonhomogeneous physicochemical system
5: an individual or subgroup distinguishably different in appearance or behavior from the norm of the group to which it belongs
Good catch.